Final report of Breast Cancer Care Registry at the Kenyatta National Hospital, Nairobi.

Abstract

Retraction The abstract by Othieno-Abinya et al entitled, “Final report of Breast Cancer Care Registry at the Kenyatta National Hospital, Nairobi,” published in the Journal of Clinical Oncology 39, no. 15 suppl (May 20, 2021) e12552-e12552, was retracted by the authors as it did not meet the study sponsor's prior scientific verification and approval. This abstract was retracted on June 29, 2021. e12552 Background: Breast cancer is the commonest cancer among women in Kenya. We wanted to examine breast cancer seen at the Kenyatta National Hospital in relation to local factors that influence prognosis and quality of life, local variations in treatment and outcomes; describe the clinical care patterns, monitor the safety of the therapies provided to patients in a routine clinic setting. Methods: A prospective study of patients with breast cancer between 11.08.2011 and 11.09.2014 inclusive. Data included demographic details, diagnostic and staging procedures, stage, treatment and outcome. Estimates of relative survival used period approach. hi-square tests and analysis of variance (ANOVA) were utilised to make comparisons. Cross sectional data are presented in proportions, means and medians. Results: Four hundred patients were included, age range 20 to 83, median 49 years. Out 312, 65 (20.8%) were obese. Eight of 397 (2%) were smokers and 22(5.5%) took alcohol. Early disease was diagnosed in 269 out of 354 (76%) and metastatic disease in 85(24%). Breast lump presented in 388 out of 400 (97%), breast pain in 104 out of 388 (26.8%). Fifteen of 394 (3.8%) had second breast cancer, 4 (1%) had had ovarian cancer and 9 (2.3%) had had had other malignancy. History of breast cancer in first and second-degree relative was elicited in 41 out of 394 (10.4%). Ductal carcinoma NOS was commonest in 343 (88.2%), lobular carcinoma in 9(2.5%). Cases by T stage were T1 - 25(7.2%), T2 -130(37.4%), T3 - 96(27.6%), T4 - 87(25%). Of 322 cases, 187(58.1%) were ER positive and 175 (54.4%) PR positive. Her2 positive cases were 78 out of 322 (24.2%). Neo adjuvant and adjuvant chemotherapy mainly consisted of combinations of cyclophosphamide and doxorubicin [AC] +/- a taxane[AC→T] ( mainly by medical oncologists) or AC+ 5-FU [CAF] (mainly by clinical oncologists). Of 305 cases 272 (89.2%) completed adjuvant therapy, 8(2.6%) died during treatment. Median overall survival was 57.1 months (95% CI; 55.6 to 59.5 months). For metastatic disease, median PFS was worse for patients < 40 years. Conclusions: Pathology and biology mirrored global situation, over 75% of patients had non metastatic disease. A significant proportion of early disease patients did not complete treatment.