Prevalence of anemia and compliance to the National Comprehensive Cancer Network guidelines for workup and treatment of anemia among patients with gynecologic malignancies.

Abstract

32 Background: The National Comprehensive Cancer Network (NCCN) recommends prompt evaluation of anemic patients with hemoglobin (Hb) ≤ 11g/dL. There are a paucity of studies evaluating compliance with the NCCN guidelines. Our objective was to investigate the prevalence of anemia among patients diagnosed with gynecologic cancers and assess compliance with NCCN guidelines. Methods: We performed a retrospective cohort study of patients diagnosed and treated with gynecologic cancer at our institution from 2008-2018. Tumor-registry-confirmed cancer cases were identified using ICD codes from the Synthetic Derivative (SD) database which is a de-identified copy of our institution’s electronic medical record. Patients were included if they were between the ages of 18 and 89, had their initial care at our institution, and had a Hb within the first 6 months of diagnosis. Dual primaries were excluded. Anemia was defined as Hb ≤ 11g/dL. Anemia was graded using the CTCAE v.4.0. Absolute and possible iron deficiency were defined by NCCN Guidelines. Results: We identified 1031 patients who met our inclusion criteria. The median age was 61 years (range 20 - 86). The most common malignancy was uterine cancer 509 (49%) followed by ovarian 262 (25%), cervical 133 (13%), vulvar 107 (10%) and vaginal 20 (2%). Of the 1031 patients in our study, 662 (64%) were noted to be anemic within six months of diagnosis. Of these patients 128 (19%) were noted to have grade 1, 309 (47%) grade 2, and 225 (34%) grade 3 anemia. Of those who were anemic, 90 (14%) underwent any workup for anemia, of which 63 (10%) had iron studies performed. Of those with iron studies performed, 7 (1%) patients had absolute iron deficiency and 24 (4%) had possible iron deficiency. Despite the small percentage of individuals with anemia evaluation, 266 (34%) patients received treatment of anemia. Treatments included: oral iron 47 (7%), IV iron 6 (1%), and blood transfusion 213 (32%). Conclusions: Anemia is pervasive among gynecologic cancer patients, but compliance with NCCN guidelines is low. Our data suggest there are opportunities for improvement in evaluation and management of anemia among gynecologic cancers.