Screening Guidelines Research Articles

The impact of genetic risk on the prevalence of advanced fibrosis and cirrhosis in prospectively assessed patients with type 2 diabetes.

Genetic factors contribute to the risk and severity of metabolic dysfunction-associated steatotic liver disease (MASLD). However, the utility of genetic testing in risk stratification remains poorly characterised. To examine the influence of genetic risk on advanced fibrosis and cirrhosis in patients with type 2 diabetes mellitus (T2DM) and the utility of a polygenic risk score (PRS) in screening guidelines. We prospectively enrolled adults aged ≥50 years with T2DM recruited from clinics. PRS was the sum of risk alleles in PNPLA3, TM6SF2 and SERPINA1 minus the protective variant in HSD17B13. We performed magnetic resonance elastography and vibration-controlled transient elastography to assess for advanced fibrosis and cirrhosis. Of 382 included patients, the mean age and BMI were 64.8 (±8.4) years and 31.7 (±6.2) kg/m2 respectively. The prevalence of advanced fibrosis and cirrhosis were 12.3% and 5.2% respectively; higher PRS was associated with increased risk of cirrhosis (2.7% vs. 7.5%, p = 0.037). High PRS was associated with increased risk of advanced fibrosis among those with fibrosis-4 index (FIB-4) index <1.3 (9.6% vs. 2.3%, p = 0.036) but was not significantly different in other FIB-4 categories. Incorporating PRS determination into the American Gastroenterological Association and American Association for the Study of Liver Diseases screening guidelines prevented approximately 20% of all participants with advanced fibrosis from being inappropriately classified as low risk. Utilising a well-phenotyped, prospective cohort of adults with T2DM, we found that adding an assessment of genetic risk to recommendations to screen at-risk populations may improve risk prediction.

Lung cancer among patients with secondhand smoke exposure: A systematic review.

e22506 Background: Smoking tobacco is recognized as the leading cause of lung cancer. However, it is imperative to note that 10–15% of lung cancer patients have no history of smoking, and that lung cancer remains the leading cause of cancer deaths among non-smokers. Since passive smokers are exposed to many carcinogenic compounds in the exhaled smoke, it is naturally plausible that secondhand smoking (SHS) is a risk factor for lung cancer. However, current USPSTF screening guidelines for lung cancer with low dose CT (LDCT) do not include patients exposed to SHS. We performed a systematic review to highlight SHS as an etiology of lung cancer and insights for inclusion in cancer screening criteria. Methods: We utilized the PubMed, Medline, Science Direct, and ClinicalTrials.gov databases to search for relevant literature using keywords ('low Dose CT,' 'secondhand smoke,' 'lung cancer'). The search strategy was designed to ensure a comprehensive retrieval of pertinent literature, minimizing the possibility of omitting articles due to insignificant spelling and/or semantic variations. Eligible studies had to be published between 2010 and 2023 and focused on examining the effect of SHS in populations at risk of lung cancer or those undergoing lung cancer screening. Articles not available in English were excluded from this systematic review. In total, 239 relevant articles were retrieved from all databases, narrowing down to 14 articles after the initial screening and further reducing to 4 articles after the second round of screening. Results: Three of the four articles included in our systemic review were conducted in Asia. A study by He et al. showed a substantial increase in the relative risk of lung cancer among SHS (RR 2.00; 95% CI, 0.62-6.40), with significant dose-response relationships between cumulative SHS exposure at home and work and the increased risk of cause-specific and total mortality. Another observational study on the use of LDCT in Japan has interestingly shown a shifting landscape of lung cancer demographics, with 49.6% of patients identified as never-smokers and 70.0% of the never-smoker lung cancer patients having SHS exposure. Secondhand smoking has also been reported to increase the risk of pulmonary nodules (HR 1.17; 95% CI, 1.01-1.35) and pulmonary emphysema (OR 13.6; 95% CI, 1.70-106.1) in those with moderate-to-high SHS exposure, which was the population where lung cancer was more prevalent. Conclusions: Our findings suggest a critical gap in current healthcare recommendations, specifically addressing the absence of guidelines for LDCT screening in individuals with moderate-to-high SHS exposure despite established evidence linking SHS to a significant increase in the risk of lung cancer development. More studies are needed to formulate evidence-based guidelines for lung cancer screening and detection in this population, given the expected mortality reduction benefit.

Evaluation of cancer screening services provided for people living with HIV in Botswana, 2022-2023.

People living with human immunodeficiency virus (PLHIV) have an increased risk of cancers. Currently, Botswana has no screening guidelines for common cancers in PLHIV except cervical cancer. Also, the proportion of PLHIV who are screened for cancer is unknown. This study aimed to evaluate cancer screening services for PLHIV receiving care in the human immunodeficiency virus (HIV) clinics. Resources for cancer screening were assessed and medical records of adults initiating antiretroviral therapy (ART) from 2020 to 2021 in 20 high-volume HIV clinics in Gaborone and Francistown were reviewed. Questionnaires assessing knowledge and practices of cancer screening were administered to health workers. The majority of clinics had the required resources for cancer screening (specifically cervical cancer). Of the 62 health workers working at the HIV clinics, 57 (91.9%) completed the questionnaire: 35 (62.5%) nurses and 22 (37.5%) doctors. Only 26.3% of the health workers were trained in cervical cancer screening. Doctors were more likely to report practicing routine screening of other cancers (e.g. breast) (p = 0.003) while more nurses reported assessing patients for cancer history during follow-up visits (p = 0.036). Most health workers did not perform physical examinations to detect cancer at initial or follow-up visits. Of the 1000 records of PLHIV reviewed, 57.3% were females, and only 38% of these were screened for cervical cancer. Besides cervical cancer, almost all (97.8%) were not screened for any cancer at ART initiation and during follow-up. These findings highlight the need to improve cancer screening services of PLHIV in Botswana through the training of health workers, and the development and enhanced use of screening guidelines.

Cancer screening in sexual and gender minority populations: A systematic review and meta-analysis.

10540 Background: The sexual and gender minority (SGM) populations experience a greater cancer burden than their heterosexual or cisgender counterparts. Screening rates for cancer within this cohort are frequently suboptimal, highlighting notable deficiencies in screening recommendations. Inadequate culturally competent care and screening guidelines may contribute to delays in cancer diagnosis and treatment, ultimately impacting survival and quality of life. We sought to investigate the existing disparities in cancer screening among SGM populations. Methods: We conducted a systematic review and meta-analysis to assess the cancer screening rates in SGM. The SGM population included in this study were gays, lesbians, bisexuals, transgender men, and transgender women. Two reviewers conducted a systematic search of numerous databases, including PubMed, PsycINFO, and CINAHL, and then extracted relevant information from eligible studies. For this study, we conducted a meta-analysis using a random-effects model. Pooled estimates of the odds ratio were calculated for any combination of outcomes and population when at least two studies had relevant data. Study heterogeneity was assessed using I² statistics. Meta-regression, accounting for the study weight, year, and latitude, was performed on variables potentially associated with heterogeneity. Newcastle-Ottawa Scale was used to assess the quality of selected studies. Results: We analyzed data from a total of 60 eligible studies with 65,315 patients. Pooled analysis showed that sexual minority groups were at lower risk for cancer screening such as breast cancer screening (OR: 0.79, 95% CI, 0.75-0.82; Chi2=835.23; p&lt;0.001; I2=97%), cervical cancer screening (OR: 0.62, 95% CI, 0.56-0.72; Chi2=926.23; p&lt;0.001; I2=96%), colorectal cancer screening (OR: 0.51, 95% CI, 0.45-0.61; Chi2=3272.21; p&lt;0.001; I2=98%), and prostate cancer screening (OR: 0.71, 95% CI, 0.63-0.82; Chi2=1282.92; p&lt;0.001; I2=99%). The prevalence of lung cancer (p&lt;0.001) and anal cancer screening (p&lt;0.001) were also lower in sexual minority groups. The analysis also showed no small study effects (Egger test: 1.33; 95% CI: −5.42, −0.63; p=0.182). All the subgroups (geographical location, screening procedure, screening period) had high between-study heterogeneity. Conclusions: Our findings indicate that cancer screening rates for breast, cervical, colorectal, prostate, lung, and anal cell cancer are significantly lower in SGM populations and emphasize the urgent need for targeted interventions, culturally competent care, and inclusive screening guidelines to address these disparities. Understanding and addressing these issues are crucial for reducing delays in cancer diagnosis and improving survival and quality of life for SGM population. Further research and comprehensive strategies are warranted to bridge these gaps in cancer screening accessibility and uptake.

The role of obesity in the clinicopathologic variables and treatment of early stage breast cancer.

e12555 Background: Breast cancer (BC) is the second most common cancer among women in the United States. Studies have found obesity to be a key risk factor for BC, in which obese patients have higher recurrence and mortality. With 40% of the United State population being obese, we studied the differences in clinicopathological variables and treatment of normal-weight (NW) and obese patients with BC in a community-based cancer center within Florida. Methods: In this retrospective study, 535 patients with non-metastatic breast cancer (NMBC) diagnosed between January 1st, 2015 and December 31st, 2021 were identified. A Two Proportion Z test was done to evaluate the association between body mass index (BMI) groups of NW (BMI &lt;25) and obese (BMI &gt;30) patients amongst several independent variables. Variables included are histology, grade, estrogen and progesterone receptor status (ER/PR), human epidermal growth factor receptor 2 (HER2) status, chemotherapy, and surgical modality. Results: Results demonstrated that only Grade 2 histology was statistically more prevalent in NW vs obese patients (p &lt; 0.01). 218 patients underwent mastectomy with 54% in the obese BMI. 317 patients were treated with lumpectomy with 65% in the obese BMI. Of the 211 NW patients, 97% were HER2 negative or low compared to 96% in the obese group. Only 3% and 4% of patients were HER2 positive in NW and obese groups, respectively. Of the obese patients, 40% were treated with neoadjuvant/adjuvant chemotherapy compared to 33% of NW patients (p=0.05). Factors such as mean age, smoking status and other demographic information were not statistically different between the groups. Conclusions: This study demonstrates that obese NMBC patients required chemotherapy more often than NW patients and that histologic characteristics cannot explain this difference in treatment. Factors such as stage at diagnosis or BC prognostic scores may contribute to the increased use of chemotherapy in obese patients. A limitation of this study is that the stage of disease at diagnosis was not abstracted, as a new staging system for BC was implemented in 2018. Furthermore, studies have suggested that, in obese patients, difficulty in identification of a mass in clinical or self -breast exam and poor compliance with screening guidelines may delay diagnosis of BC at an earlier stage. Obesity has many negative health effects, and with the increased use of novel weight loss medications, it will be important in the future to study the impact this may have on breast cancer development, histopathologic features, and treatment of patients with breast cancer. [Table: see text]

Improving lung cancer health equity by applying deep learning to low dose CT screening of minority and disadvantaged patients.

1584 Background: In the US, disparities in lung cancer mortality exist for African American, Hispanic, and other minorities. Standard of care low dose CT screening (LDCT) detects early-stage disease and improves mortality, yet disparities are perpetuated in screening by eligibility criteria derived from cohorts underrepresenting these minorities. One such cohort is the National Lung Screening Trial (NLST) cohort which is 92% White. Consequently, guidelines for lung cancer screening may be insufficient to address the unique needs of diverse populations. We hypothesize that Artificial Intelligence prediction of future lung cancer risk from an individual’s LDCT can partially mitigate racial and ethnic disparities and improve health system practice guidelines by individualizing screening risk as compared to current general guidelines. Here, we benchmark a Resnet18 3D neural network trained on NLST LDCT images, Sybil, on the diverse patient population of the University of Illinois Health system (UIH) which is 20% White and 60% African American. Methods: A real-world cohort from UIH consisting of 1,450 CT studies was evaluated alongside 60,378 CT studies from the NLST cohort. All CT studies evaluated by the model were not used in model training. Using Youden’s J index as a probability cutoff, sensitivity, specificity, positive predictive value, negative predictive value, and accuracy were evaluated. Receiver operating characteristic (ROC) and precision-recall (PR) curves were generated to assess model performance between cohorts. NLST data were truncated to achieve equivalent incidence of lung cancer with UIH when generated PR curves. Results: Multi-year prediction performance (ROC-AUC and PR-AUC) between cohorts are summarized (Table). For prediction of lung cancer within 1-year of LDCT in the UIH cohort, the model respectively demonstrated sensitivity, specificity, positive predictive value, and negative predictive value among White (0.80, 0.77, 0.54, 0.92), African American (0.84, 0.78, 0.39, 0.97) races and Hispanic (0.75, 0.73, 0.60, 0.84) and non-Hispanic (0.87, 0.77, 0.42, 0.97) ethnicities. Conclusions: Model performance was similar between the NLST (92% White) and a diverse, real-world cohort at UIH (20% White) though decreases in ROC-AUC performance in year 1 predictions and may be due to insufficient representation of minority populations during model training. Prospective studies involving larger and more representative patient populations should be conducted to further optimize the model and evaluate its clinical utility to improve lung cancer health equity in minority populations.[Table: see text]

Risk of subsequent primary cancers among adult cancer survivors.

10554 Background: Improvements in early detection and clinical management of cancers have led to a significant increase in long-term cancer survivors who may be at an elevated risk of developing a subsequent primary cancer (SPC). As the largest and most comprehensive analysis in Canada, we assessed the risks and patterns of SPC development among 134,693 adult cancer survivors with 852,661 person-years of follow-up. Methods: We used data from the Alberta Cancer Registry (ACR) to identify all first primary cancers (FPC) occurring between 2004 and 2015 to allow for adequate follow-up until December 31, 2020. A SPC was considered as the next primary cancer occurring in a different organ/site. We estimated incidence rates (IR) and standardized incidence ratios (SIR) for SPC development with 95% confidence intervals (CI). IRs were estimated as the observed number of SPC divided by the person-years of follow-up. SIRs were estimated as the observed number of SPC (O) divided by the expected number of SPC (E), where E is a weighted-sum of the general population-based year-age-sex-specific incidence rates and the corresponding person-years of follow-up among the adult cancer survivors. Results: The risk of developing a SPC up to fifteen years after an initial cancer was 16.1% for males and 12.3% for females. These risk estimates varied considerably by initial cancer site. Survivors of initial head and neck cancers had a fifteen-year cumulative incidence of 21.3% and a 2.5-fold relative risk of SPC development. Overall, both males (SIR=1.50) and females (SIR=1.64) had an increased risk of developing a SPC. Both male and female survivors of a FPC were at a significantly increased relative risk of developing a screen-detectable SPC (breast, cervical, colorectal, lung). There were significant increases in SPC risk for nearly all age groups, with a greater than 5-fold increase for survivors of early-onset cancers diagnosed between ages 18 to 39. Conclusions: Cancer survivors of nearly every FPC site had substantially increased risk of a SPC, compared to the cancer risk in the general population. Screen-detectable cancers were common SPC sites and this highlights the need to develop evidence-based guidelines for cancer screening in the growing population of long-term cancer survivors.[Table: see text]

E-cigarette use and United States Preventive Services Task Force (USPSTF) lung cancer screening (LCS) eligibility.

10531 Background: Electronic cigarettes (E-cigarettes) have become frequently used as a smoking cessation tool. Emerging research has shown that e-cigarettes have similar carcinogenic effects as combustible cigarettes. While current lung cancer screening (LCS) guidelines primarily rely on individuals’ smoking history, it's becoming increasingly important to understand the prevalence of e-cigarette use among individuals, especially in the context of their LCS eligibility. Methods: Individuals aged 40-80 years were extracted from the 2022 Behavioral Risk Factor Surveillance System. Eligibility was defined using the 2021 USPSTF LCS criteria, i.e., aged 50-80 years who ever smoked, with at least a 20-pack-year smoking history, currently smoke or quit within the past 15 years. We compared the prevalence of current and ever e-cigarette use among LCS-eligible and non-eligible populations, overall and by smoking (combustible cigarettes) status using chi-square tests. All analyses were weighted. The significance level was set at a 2-sided p-value of &lt;0.05. Results: Among the 208,317 individuals included, 9.9% were eligible for LCS. Overall, 3.8% and 22.1% reported current and ever cigarette use, respectively. Fewer LCS-ineligible individuals reported currently using e-cigarettes than their LCS-eligible counterparts (Table). Among former combustible cigarette users, LCS-ineligible individuals were less likely to be current e-cigarette user than LCS-eligible individuals. However, among current combustible cigarette users, LCS-ineligible individuals were more likely to be current e-cigarettes users than LCS-eligible individuals. When examining the prevalence of ever e-cigarette use, similar findings were observed. Conclusions: Our study reveals a significant prevalence of e-cigarette usage among older adults (aged 40-80), with 1 in 5 individuals reporting ever having used e-cigarettes. Moreover, current cigarette users who were ineligible for LCS were more likely to use e-cigarette than their LCS-eligible counterparts. Future epidemiological studies are warranted to assess the risk of e-cigarette use (including intensity, duration and interactions with combustible cigarettes) and lung cancer risks. E-cigarette use may need to be considered in formulating future LCS guidelines. [Table: see text]

Effect of cancer screening with multi-cancer early detection testing and whole body MRI on cancer worry in a high-risk population.

10520 Background: Multi-cancer Early Detection tests (MCED) and whole-body imaging are being increasingly utilized for early cancer detection but are not included in cancer screening guidelines. Our aims were to 1) determine the feasibility of MCED testing and whole-body MRI (WBM) to screen people at high-risk for cancer after germline testing and cancer genetics evaluation and 2) understand the impact of MCED and WBM on cancer worry and anxiety. Methods: We conducted a feasibility trial of people &gt;50 years old with a strong family history of cancer and/or a pathogenic/likely pathogenic germline variant in a cancer susceptibility gene for which WBM is not part of standard risk management. Participants completed a baseline survey including the SF12, State Trait Anxiety Index (STAI), and modified cancer worry scale (CWS). They then underwent non-contrast whole body 3T MRI and liquid biopsy using DEEPGEN, a mutational-based MCED. Results were reported to participants and additional imaging studies or consultations were obtained as needed. Participants were surveyed 6 months after testing using SF12, STAI, CWS, and a questionnaire on acceptability of the intervention. Results: 100 participants were enrolled; 73 have completed 6-month follow-up. Median age was 62 years (IQR 57-66) and 64% of participants were women. MCED was positive in 4 participants, none of which had suspicious findings on WBM. 27 (27%) underwent additional imaging to further evaluate findings identified on WBM. 4 (4%) had cancer diagnosed based on WBM findings and subsequent work up (lung adenocarcinoma, prostate cancer, duodenal neuroendocrine carcinoma, and ovarian Brenner tumor); all 4 underwent surgical resection. One participant underwent bone marrow biopsy due to JAK2 mutation and thrombocytosis (evaluation ongoing) and one participant had a thyroid biopsy for a benign nodule. 62 (85%) somewhat/strongly agreed that study participation reduced cancer worry. Composite CWS scores showed decreased worry at 6 months compared with baseline (12.7 vs 13.7, p=0.003). At baseline, 30 (41%) reported that they somewhat/very often worry about getting cancer, compared with 14 (18%) at 6 months (p&lt;0.001). 8 (11%) reported at baseline that cancer worry affected their mood somewhat/very often, compared with 2 (3%) at 6 months (p&lt;0.001). There were no significant differences in STAI or SF12 composite scores between baseline and 6 months. 69 (95%) somewhat/strongly agreed that they would like to participate in future testing with WBM and MCED. Conclusions: MCED and WBM testing is feasible and was associated with decreased cancer worry at 6 months. In this high-risk cohort, cancer was detected in 4% of patients. Further evaluation of cancer screening in high-risk populations using WBM and MCED testing is warranted particularly with respect to patient-centered outcomes, cancer outcomes, and healthcare resource utilization. Clinical trial information: NCT05868486 .

Pathogenic germline variant discovery in plasma cell disorders: Insights from genetic counseling referrals and testing.

10619 Background: Our research has shown that 10% of multiple myeloma (MM) patients harbor pathogenic or likely-pathogenic germline variants (PGVs) in cancer predisposition genes, with a significant enrichment observed in BRCA1/2 genes. PGVs are notably more common in younger MM patients and those with a personal or familial cancer history. This study presents our experience in referring plasma cell disorder (PCD) patients at increased risk for carrying PGVs, due to either clinical history or suspicious tumor NGS findings, for genetic counseling and subsequent germline testing. Methods: This retrospective study reviewed patient records from our institution's PCD clinic, focusing on those referred for a genetic evaluation between 2020 and 2024 due to suspected cancer predisposition. We compiled demographic and clinical data for these patients, reasons for referral, and cancer history of patients and their families. The uptake of germline testing, identified mutations, and subsequent recommendations for advanced cancer surveillance and prevention, including cascade testing, were also analyzed. Germline testing utilized targeted hereditary cancer panels from five companies and was conducted on DNA samples extracted from peripheral blood, saliva/buccal swabs, or skin biopsies. Results: 52 PCD patients underwent a genetic evaluation and were included in this review, comprising 31 MM, 9 smoldering MM, and 12 MGUS cases. Median age at the time of referral was 63, and 54% of patients were female. Racial composition was 62% White, 15% Black/African-American, 12% Hispanic, 2% Asian, with 10% undisclosed. 8 patients were referred due to suspicious findings in tumor NGS, while the rest were referred due to clinical suspicion. A personal history of cancer was reported by 19 patients (37%), and 49 had a first- or second-degree relative with cancer (94%). 38 patients (73%) underwent germline testing, of which 15 (39%) harbored PGVs (11 had MM, 4 had smoldering MM). 8 PGV carriers had well-established founder variants. The remaining 7 had PGVs in genes including BRCA2 (n=3), PALB2 (n=1), BLM (n=1), SMAD4 (n=1) and NTHL1 (n=1). Of note, all 8 referred for suspicious findings in tumor NGS were confirmed to harbor PGVs. All PGV-positive patients were recommended for cascade testing and enhanced cancer screening. Conclusions: Our findings indicate a 39% PGV detection rate in PCD patients referred for genetic evaluation, underscoring the potential benefit of implementing screening guidelines in this population. PGV detection led to recommendations for intensified surveillance and cascade testing in all cases, impacting both patients and their families. The discovery of BRCA2PGVs in 20% (3/15) of cases reinforces its potential role as a predisposition gene in MM, corroborating our prior findings.

Effect of multi-cancer early detection screening on late-stage cancers: A modeling study.

11076 Background: Emerging blood-based multi-cancer early detection (MCED) tests can revolutionize early cancer detection. We evaluated the potential impact of MCED screening in reducing risk of late-stage diagnosis of 12 specific cancers which represent 70% of all cancer incidence in the US. Methods: We developed Simulation Model for MCED (SiMCED), a microsimulation model of 12 solid tumor cancer types: breast, colorectal, endometrial, esophageal, gastric, kidney, liver, lung, ovarian, pancreatic, prostate, and urinary bladder. Transitions between cancer stages (I-IV) were driven by cancer type- and stage-specific dwell times, which were synthesized from published literature and empirical estimates. MCED test sensitivity was derived from the PRE-ASCEND study on average-risk American adults. The model was calibrated to reproduce yearly observed cancer incidence diagnosed symptomatically or through screening as captured in the Surveillance, Epidemiology, and End Results (SEER) database, while accounting for unobserved cancer incidence by age, sex, and cancer type and stage. Using a 50-year time horizon, we simulated 100,000 individuals aged 50 to 84 years. Diagnosis of cancer could arise from usual care (UC) or annual MCED screening. Results: Over the 50-year horizon, MCED screening of 100,000 individuals resulted in 1,323 fewer Stage IV (24%) diagnoses relative to UC, with 38% of Stage IV reductions attributed to non-screening-detectable cancer types (i.e., those without recommended screening guidelines). The table displays absolute and percentage reductions in Stage IV diagnoses for the 8 cancer types with the highest absolute reduction in Stage IV diagnoses. The percentage of Stage IV reduction was 21% for screening-detectable cancers and 29% for non-screening-detectable cancers. Conclusions: Our study suggests that MCED screening could be effective for reducing the incidence of Stage IV cancer, which is associated with the worst survival and quality of life. Of note, MCED has the potential to reduce Stage IV cancer incidence for cancers without recommended screening guidelines. However, the real-world impact of MCED tests and their cost-effectiveness require further investigation. [Table: see text]

Rectal cancer: Demographics and healthcare outcomes in a minority-rich community hospital.

e13735 Background: Rectal cancer (RC) has seen a decreasing incidence and mortality due to national screening guidelines, innovative therapies and new technology. In recent years, however, we have noted shifts in its demographics pertaining to variation in stage at diagnosis and mortality rates amongst various ethnic groups. Minority populations, namely Hispanic (H) and Black (B) patients (pts), continue to see higher incidence, diagnosis at more advanced stages and poorer survival than White (W) pts. In B pts, mortality rates are higher with an increased likelihood of distant-stage RC creating a significant survival disparity. Current studies involving H and Asians(A) show similar disparities. Compared to other malignancies, RC has improved survival for pts when diagnosed in a timely fashion and therefore, we seek to identify potential patterns within the diverse population we care for. Methods: Trinitas Medical Center RWJBH is an urban, community hospital that predominantly treats a minority population. With institutional IRB approval, we completed a retrospective chart review of 59 pts diagnosed with Stage I-IV RC from 2017- 2023. Pts were treated at our cancer center. We assessed age and stage at diagnosis and demographics such as age, sex and ethnicity. Results: We reviewed 59 pts with the following ethnic distribution: 22 H, 21 W, 11 B and 5 A pts. The median age at diagnosis with RC was 57 in H, 64 in B, 71 in W 71. More males were diagnosed in all groups except A pts. B pts were found to be diagnosed with more advanced disease: 36% at Stage III, 45% at Stage IV. W pts also saw a similar trend with 33% at Stage III and 24% at Stage IV. Our H pts had comparatively fewer distant stage diagnoses: 23% at Stage III, 18% at Stage IV. Common sites of metastasis in B: liver 27%, lung 27%, locoregional lymph nodes 9%. In W pts: liver 24%, locoregional lymph nodes 24%, lung 10% and brain 5%. In H pts, 10 of 22(45%) were diagnosed without metastatic disease, though of the 10 who did, 2 had brain involvement. Mortality was highest in B pts at 55%, 33% for W, 20% for A and 18% for H pts. Conclusions: In our study, we note H pts being diagnosed at an earlier median age, at earlier stages of disease, with higher survival rates. Our B pts were diagnosed younger than W pts, at later stages of disease, with higher mortality rates. Brain involvement, which usually is rare, was seen in both H and W upon recurrence. Despite having a multi specialized cancer center, we note limitations in our access to screening resources and the availability of colorectal surgical expertise to enhance care for our underserved population. The challenge of disentangling disparities within RC will benefit from improved healthcare access and availability of multimodality resources in this disease state where cure is the ultimate goal.

Rising trend of early-onset colorectal cancer in the US: Incidence and projections to 2030.

e15523 Background: Colorectal cancer (CRC) remains a critical health issue in the United States, particularly notable for its rising incidence in individuals under 55 years. Factors such as lifestyle habits, and genetic predispositions may contribute to pathogenesis while inadequate screening protocols may lead to delayed diagnoses in this younger demographic. Currently, the initial CRC screening guidelines recommend lowering the start age to 45. We seek to provide current data on the US CRC incidence and estimate the burden by 2030. Methods: Using the CDC National Center of Health Statistics database, we queried the incidence rates of CRC from 1999 to 2020. These are reported in Crude rate and age-adjusted rates to standard year 2000 populations per 100,000 person-years. The Autoregressive Integrated Moving Average model was used to predict the projected incidence rate by 2030. R software version 2023.09 was used for analysis. Results: The study identified 3,201,843 CRC cases from 1999-2020, with a notable increase in incidence rates, especially in younger demographics. The largest increase was in the 30-34 age group, with an AAPC of 2.76, followed by the 25-29 and 35-39 age groups, with AAPCs of 2.57 and 2.24, respectively. In contrast, older age groups showed a decline, with the 75-79 age group decreasing from 9.20 to 3.76, and an AAPC of -4.05%. By 2030, early-onset colorectal cancer is expected to rise, particularly in the 40-44 age group (AAPC of 3.26%) and the 35-39 age group (AAPC of 2.92%). The increase is projected mainly in the 25-54 age groups. Conversely, older populations, particularly the 75-79 age group, are projected to see a decrease in incidence rates, from 3.76 to 1.17 per 100,000 by 2030. Conclusions: Our study highlights a significant rise in early-onset CRC, especially in the 25-54 age group, with an increasing projection by 2030 while older age groups are expected to experience a decrease in incidence rates. Consideration should be given to expanding CRC screening in patients younger than 45. [Table: see text]

Cost effectiveness of colorectal cancer screening in the Dominican Republic.

e23033 Background: Colorectal cancer (CRC) incidence in the Dominican Republic (DR) is increasing, and CRC now ranks as the third-most prevalent cancer in the DR. There are no national CRC screening guidelines in the DR, and CRC screening is not routinely performed. We evaluated the impact of nationwide CRC screening by comparing the cost-effectiveness of four CRC screening strategies to the current practice of no screening. Methods: We developed a Markov model comparing four CRC screening strategies to the current practice of no screening, or natural history (NH): colonoscopy every ten years (Colo); sigmoidoscopy every five years (Sig); fecal immunochemical test biennially (FIT); and fecal occult blood test biennially (FOBT). Model inputs for screening arms were derived from international randomized controlled trials whenever possible. Data from The Rosa Emilia Sánchez Pérez de Tavares National Cancer Institute in the DR was used to estimate baseline CRC incidence, stage distribution and mortality. Screening was implemented from age 45 to 75. We assumed a 60.6% adherence rate for each screening arm. The model was cross validated by comparing the estimated lifetime impact of each screening arm on CRC incidence and mortality to estimates derived from the MIcrosimulation SCreening Analysis (MISCAN) Colorectal Cancer Model in the US. The primary outcome was the incremental cost-effectiveness ratio (ICER) of each screening strategy. Secondary outcomes included life expectancy, total cost, CRC incidence and CRC-related mortality. The willingness to pay threshold (WTP) was set to the 2022 DR gross domestic product per person ($10,111.20/life year gained). Results: In the NH strategy, 2.3% of the population developed CRC, and 1.2% died from CRC, with a lifetime cost of 203.47 per person. Compared to NH, FIT prevented 27% of CRCs and 37% of CRC deaths, with a lifetime cost of 244.76 per person. Colo was more effective than FIT, preventing 33% and 43% of CRC cases and deaths, respectively, compared to NH. However, the ICER for Colo exceeded the WTP threshold. One-way sensitivity analyses showed that the model is most sensitive to test performance characteristics and test costs. Conclusions: Among the evaluated CRC screening strategies, FIT is the cost-effective option, averting a significant number of CRC cases and deaths, at an incremental cost that is well within the WTP threshold for the DR. Inclusion of local data on the effectiveness and acceptability of the tested CRC screening modalities would improve this model, and strengthen the credibility of our findings. [Table: see text]

Budget impact model of LungFlag, a predictive risk model for lung cancer screening.

10534 Background: Lung cancer screening (LCS) programs using low-dose computed tomography (LDCT) for early detection reduce mortality and have been widely recommended. LungFlag is a machine-learning risk prediction model that uses patient-level data to identify individuals at high risk of developing non-small cell lung cancer (NSCLC), prompting their physician to recommend screening with LDCT. Methods: A budget impact model was developed to estimate the costs associated with adoption of LungFlag as an adjunct to existing US Preventive Services Task Force (USPSTF) screening guidelines for a hypothetical US commercial health plan population of 1 million beneficiaries. The model calculates the total expected annual costs of screening for NSCLC with LDCT in scenarios with and without LungFlag, including healthcare resource utilization for detecting NSCLC and treatment of patients diagnosed with NSCLC. Incremental costs were evaluated over a 5-year period. Results: Among 36,803 USPSTF-eligible persons, we assumed that 4600 (12.5%) had already initiated LCS, leaving 32,203 persons who were candidates for pre-screening with LungFlag. The model estimated that 17 additional NSCLC diagnoses per year would be detected by screening when using LungFlag, with most in stage 1. Over 5 years, LungFlag was estimated to result in 33 fewer patients with stage 3 or stage 4 NSCLC at diagnosis and 22 fewer NSCLC-related deaths. Use of LungFlag increased annual costs during the first 2 years and provided cost savings from Year 4 onwards (Table). Cost savings from LungFlag were attributable to reductions in the costs of advanced NSCLC treatment. Conclusions: In a population of 1 million commercial health plan beneficiaries, the adoption of LungFlag as an adjunct to existing screening guidelines for USPSTF-eligible patients was estimated to prevent 22 additional NSCLC-related deaths, with a cost savings of $2.87 million over 5 years from a US commercial payer perspective. [Table: see text]

Role of military physicians in cancer screening practices: The DEPISTmed study.

e22502 Background: Cancer poses a significant health challenge within the military population, impacting both medical and economic aspects, as well as military operations. Despite the potential benefits of early cancer detection, adherence to organized and individual screenings remains below 50%. The pivotal role of military physicians, especially within military forces, in cancer prevention and screening is crucial.The main objective was to investigate the professional practices of military physicians in cancer screening, aiming to understand their perceptions, practices, and the role of screening in their daily routines. Methods: A prospective, observational, non-interventional cohort study was conducted, utilizing anonymous self-assessment questionnaires among military physicians practicing in army or joint military medical centers. Criteria for inclusion involved physicians engaged in patient care, including the performance of medical check-ups. Demographic data, perceptions, declared practices, and primary prevention measures were assessed through secure electronic questionnaires. Results: Between June 1, 2023, and September 30, 2023, 169 practitioners were included, with 51% were female. The median number of visits per practitioner was 400 (range 150-600). The study revealed a heightened concern among military physicians regarding cancer screening, particularly for breast, colon, and testicular cancers, with over 78% of practitioners expressing a significant level of concern (range: 59-90%). However, our investigation exposed disparities in clinical examinations and the prescription of additional tests, specifically within organized screenings among unit physicians. Less than 7% utilized recommendation sheets. Conclusions: Military physicians express a genuine concern for cancer screening, indicating the periodic medical check-up as an opportune moment for imparting screening information. The study highlights limitations such as the need for dedicated training, availability of materials, and optimizing patient care pathways. This research sheds light on the critical role of military physicians in cancer screening and provides insights into the challenges and opportunities for improving screening practices within military healthcare settings. The findings underscore the importance of targeted interventions to enhance adherence to screening guidelines and strengthen cancer prevention efforts within the military healthcare system.

Universal genetic counseling in breast cancer patients significantly improves overall testing rates and improves completion rates in subpopulations.

The NCCN guidelines recommend genetic testing in those patients at increased risk of breast cancer in order to identify candidates for increased frequency of screening or prophylactic mastectomy. However, genetic testing may now identify patients who may benefit from recently developed targeted breast cancer therapy. In order to more widely identify these patients, we implemented genetic counseling for all patients diagnosed with breast cancer. In 2021, all patients evaluated within a Midwestern community hospital system diagnosed with breast cancer were offered genetic counseling. This group of patients was compared to a cohort of patients in 2021 who were offered genetic counseling based on NCCN guidelines. With Pearson's chi square, Fisher's Exact test, Mann-Whitney U, and multivariate regression as appropriate, individual demographic data and genetic testing completion between 2019 and 2021 were evaluated. A total of 973 patients were reviewed. 439 were diagnosed with breast cancer in 2019 and 534 in 2021. Demographics and stage at diagnosis (p = 0.194) were similar between years. Completion of genetic testing increased from 204 (46.5%) in 2019 to 338 (63.3%) in 2021 (p < 0.01) with the universal counseling protocol. Specifically, genetic testing completion increased significantly in older patients (p = 0.041) and patients receiving Medicare benefits (p = 0.005). The overall pathogenic variants found increased from 32 to 39 with the most common including BRCA2 (n = 11), CFTR (n = 9), CHEK2 (n = 8), BRCA1 (n = 6). Universal genetic counseling was related to a significant increase in genetic testing completion and an increase in pathogenic variants found among breast cancer patients, specifically in subpopulations which may have been previously excluded by traditional NCCN genetic testing screening guidelines.

Associations between news coverage, social media discussions, and search trends about celebrity deaths, screening, and other colorectal cancer-related events

ObjectiveColorectal cancer (CRC) is the third leading cause of cancer death among both men and women in the United States. CRC-related events may increase media coverage and public attention, boosting awareness and prevention. This study examined associations between several types of CRC events (including unplanned celebrity cancer deaths and planned events like national CRC awareness months, celebrity screening behavior, and screening guideline changes) and news coverage, Twitter discussions, and Google search trends about CRC and CRC screening. MethodsWe analyzed data from U.S. national news media outlets, posts scraped from Twitter, and Google Trends on CRC and CRC screening during a three-year period from 2020 to 2022. We used burst detection methods to identify temporal spikes in the volume of news, tweets, and search after each CRC-related event. ResultsThere is a high level of heterogeneity in the impact of celebrity CRC events. Celebrity CRC deaths were more likely to precede spikes in news and tweets about CRC overall than CRC screening. Celebrity screening preceded spikes in news and tweets about screening but not searches. Awareness months and screening guideline changes did precede spikes in news, tweets, and searches about screening, but these spikes were inconsistent, not simultaneous, and not as large as those events concerning most prominent public figures. ConclusionsCRC events provide opportunities to increase attention to CRC. Media and public health professionals should actively intervene during CRC events to increase emphasis on CRC screening and evidence-based recommendations.

Characteristics of lung cancer screening eligible population in the US and prediction of the eligibility with simplified criteria.

In 2021, updates to the lung cancer screening (LCS) guidelines extended the eligibility to include younger individuals and those with lower lifetime smoking intensity. A significant challenge in the LCS implementation is identifying eligible individuals because lifetime smoking intensity, a key criterion of current guidelines, is typically unavailable in electronic health records and difficult to assess accurately. This study aimed to (I) examine the characteristics of the eligible population in the US based on current guidelines and (II) evaluate the performance of five simplified criteria as alternative tools for predicting LCS eligibility. National Health and Nutrition Examination Survey (NHANES) 2013-2018 data were used. Five simplified criteria were: (I) ever smoker, defined as an individual with any positive smoking history; (II) current or former smoker, an individual with any positive smoking history or who quit smoking within 15 years; (III) current smoker, an individual currently smoking; (IV) current smoker, an individual currently smoking >0.5 packs per day (ppd); (V) current smoker, a person currently smoking >1 ppd. Sensitivity, specificity, positive predictive value, negative predictive value, and accuracy were calculated. The complex survey design was considered. About 16.70 million individuals (representing 16.01% of population aged 50-80 years) were eligible for LCS in the US. The percentage of LCS eligibility was higher among people who were younger, male, non-Hispanic White, less educated, single, not insured, with poorer health status and lower socioeconomic status. Except for the criterion of current smoker with >1 ppd having low sensitivity (0.08), other criteria had sensitivity ranging between 0.45 and 1.00. The accuracy of the five criteria used ranged between 0.70 and 0.91. Individuals with less favorable social and clinical characteristics have higher chances of being eligible for LCS, potentially amplifying disparities in LCS utilization. Simplified criteria can be used as prescreening tools to identify target populations, which could facilitate LCS implementation at the population level.

Screening for carcinoid heart disease: Trends and future Perspectives

BackgroundScreening for carcinoid heart disease (CHD), has historically lacked consensus expert guidelines. In 2017, the North American Neuroendocrine Tumor Society (NANETS) released expert recommendations for CHD screening among NET patients to improve CHD detection. The objective of this study is to evaluate CHD screening trends and utility of screening guidelines over more than two decades at a single tertiary care center. Materials and methodsPatients with NETs referred for abdominal surgical evaluation at a single tertiary care center were included, 300 patients from 1999 to 2018 and 34 patients from 2021 to 2022. Lab values for the following NANETS-proposed criteria at any point during their treatments were recorded: NETs with liver metastasis, blood serotonin >5 times upper limit of normal (>1000 ng/mL), NT-ProBNP >260 pg/mL and clinical features suggestive of CHD. Results85 % (285/334) of patients included in this study met one or more expert-recommended CHD screening criteria. However, 40 % (132/285) of patients meeting one or more criteria received CHD screening via echocardiogram at some point following NET diagnosis. While rates of screening for patients increased from the first decade to the second decade (32 % vs 40.6 %), the rates were much higher after guideline publication (70 %, 24/34). Furthermore, patients meeting multiple screening criteria were more likely to have evidence of structural valve disease. ConclusionsResults of this study suggest that utilization of these four expert-recommended screening criteria have greatly increased rates of CHD screening via echocardiogram and could assist in improving early CHD detection, especially for patients meeting multiple criteria.