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. 2015 Aug;24(8):1167-73.
doi: 10.1158/1055-9965.EPI-14-1079. Epub 2015 Feb 24.

Survival among HIV-infected and HIV-uninfected individuals with common non-AIDS-defining cancers

Julia L Marcus  1 , Chun Chao  2 , Wendy A Leyden  1 , Lanfang Xu  2 , Jeanette Yu  1 , Michael A Horberg  3 , Daniel Klein  4 , William J Towner  5 , Charles P Quesenberry Jr  1 , Donald I Abrams  6 , Michael J Silverberg  7
Affiliations

Survival among HIV-infected and HIV-uninfected individuals with common non-AIDS-defining cancers

Julia L Marcus et al. Cancer Epidemiol Biomarkers Prev. 2015 Aug.

Abstract

Background: Non-AIDS-defining cancers increasingly contribute to mortality among human immunodeficiency virus (HIV)-infected individuals. However, few studies have compared cancer prognosis by HIV status with adjustment for risk factors.

Methods: We conducted a cohort study of HIV-infected and HIV-uninfected adults in Kaiser Permanente California during 1996 to 2011, following subjects diagnosed with Hodgkin lymphoma or anal, prostate, colorectal, or lung cancers. We used Kaplan-Meier curves and Cox regression to assess cancer-related mortality within 5 years, comparing HIV-infected with HIV-uninfected subjects. Adjusted models included age, race/ethnicity, sex, cancer stage, cancer treatment, and smoking.

Results: Among HIV-infected and HIV-uninfected subjects, there were 68 and 51 cases of Hodgkin lymphoma, 120 and 28 of anal cancer, 150 and 2,050 of prostate cancer, 53 and 646 of colorectal cancer, and 80 and 507 of lung cancer, respectively. Five-year cancer-related survival was reduced for HIV-infected compared with HIV-uninfected subjects, reaching statistical significance for lung cancer (10% vs. 19%, P = 0.002) but not Hodgkin lymphoma (83% vs. 89%, P = 0.40) or anal (64% vs. 74%, P = 0.38), prostate (86% vs. 92%, P = 0.074), or colorectal cancers (49% vs. 58%, P = 0.55). Adjusted results were similar, with lung cancer [HR, 1.3; 95% confidence interval (CI), 1.0-1.7] and prostate cancer (HR, 2.1; 95% CI, 1.1-4.1) reaching significance.

Conclusions: Cancer-related mortality was higher among HIV-infected compared with HIV-uninfected individuals for prostate and lung cancers, but not Hodgkin lymphoma, anal cancer, or colorectal cancer.

Impact: Our findings emphasize the need for a focus on prevention, early detection, and adequate treatment of cancer among HIV-infected individuals.

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Conflict of interest statement

Potential conflicts of interest: This work was supported by a research grant from Pfizer Pharmaceuticals. The funders had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; or decision to submit the manuscript for publication.

Figures

Figure 1
Figure 1. Five-year survival after cancer diagnosis by HIV status, 1996–2010
Kaplan-Meier curves show the cumulative proportion alive in the five years after cancer diagnosis by HIV status, with subjects censored if they died of non-cancer-related causes. Overall, 3,342 HIV-infected and 2,911 HIV-uninfected individuals contributed to the plots. Panels are as follows: (a) anal cancer, (b) prostate cancer, (c) colorectal cancer, (d) lung cancer, and (e) Hodgkin lymphoma. P-values are from log-rank tests.
See this image and copyright information in PMC

Comment in

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