Mattos BRS, Camandaroba MPG, Ruiz-Garcia E, Diaz-Romero C, Luca R, Mendez G, Lustosa IKF, Silva SF, Mello CA, Silva VS, O'Connor JM, Riechelmann RP. Outcomes of Patients With Metastatic Anal Cancer According to HIV Infection: A Multicenter Study by the Latin American Gastrointestinal Oncology Group (SLAGO).
Clin Colorectal Cancer 2021;
20:299-304. [PMID:
34158252 DOI:
10.1016/j.clcc.2021.05.005]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 05/07/2021] [Accepted: 05/13/2021] [Indexed: 11/25/2022]
Abstract
BACKGROUND
HIV-positive patients are underrepresented in clinical trials of metastatic squamous cell carcinoma of the anal canal (mSCCA). We aimed to compare the clinical outcomes of mSCCA patients according to HIV infection.
METHODS
This was a retrospective multicenter cohort study of consecutive patients with mSCCA. All HIV-positive patients received antiretroviral therapy. The primary endpoint was overall survival (OS), and secondary endpoints were progression-free survival (PFS) and response rate (RR).
RESULTS
From January 2005 to December 2019, 113 patients were included: 20 (17.6%) had HIV infection. HIV-positive patients were younger at diagnosis and more frequently male, and 20% (n = 8) received exclusively best supportive care in comparison with 8.6% of HIV-negative patients (P = .13). Both groups were similar in terms of Eastern Cooperative Oncology Group (ECOG) performance status, pattern of metastatic disease, and type of first-line chemotherapy. Five (25%) HIV-positive and 36 (38.7%) HIV-negative patients received second-line therapies (P = .24). RR and median PFS in first-line were similar between the groups: 35% and 30.1% (P = .78) and 4.9 and 5.3 months (P = .85) for patients with and without HIV infection, respectively. At a median follow-up of 26 months, median OS was 11.3 months (95% confidence interval [CI] 10.1 to 26.4) for HIV-infected patients versus 14.6 months (95% CI 11.1 to 18.1) for HIV-negative patients (P = .92). In the univariate analysis for OS, only ECOG performance status was significant.
CONCLUSION
HIV-positive mSCCA patients under antiretroviral therapy have oncological outcomes similar to those of HIV-negative patients. These patients should be included in trials of mSCCA.
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