Latin American Consensus for the Evaluation and Treatment of Patients With Metastatic/Locally Advanced Urothelial Carcinoma.

PURPOSE: Urothelial cancer accounts for approximately 3% of new cancer cases worldwide, with a high burden of disease in countries with medium and low human development indexes where its incidence and mortality are increasing. The purpose of this consensus is to develop statements on the evaluation and treatment of locally advanced and metastatic urothelial carcinoma that would further guide the clinical practice in Latin America. METHODS: A systematic review of the literature was conducted by an independent team of methodologists. Then, a modified Delphi method was developed with clinical specialists from different Latin American countries. RESULTS: Forty-two consensus statements, based on evidence, were developed to address the staging, the evaluation (suitability for chemotherapy, risk assessment, and biomarkers), and systemic treatment (first-line and subsequent therapies) of locally advanced or metastatic urothelial carcinoma. The statements made in this consensus are suggested practice recommendations in the Latin American context; however, the importance of a complete and individualized patient evaluation as a guide for therapeutic selection is highlighted. The availability and affordability of support tools for the evaluation of the disease, as well as specific therapies, may limit the application of the best practices suggested. RECOMMENDATIONS: Therapeutic decisions need to be tailored to the context-specific clinical setting and availability of resources. Local research is promoted to improve outcomes for patients with this challenging cancer in Latin America.

Impact of healthcare inequities on survival in Mexican patients with metastatic renal cell carcinoma.

Introduction: The survival of patients with metastatic renal cell carcinoma (mRCC) has improved dramatically due to novel systemic treatments. However, mRCC mortality continues to rise in Latin America. Methods: A retrospective, multicenter study of patients diagnosed with mRCC between 2010-2018 in Mexico City was conducted. The aim of the study was to evaluate the impact of healthcare insurance on access to treatment and survival in patients with mRCC. Results: Among 924 patients, 55.4%, 42.6%, and 1.9% had no insurance (NI), social security, (SS) and private insurance (PI), respectively. De novo metastatic disease was more common in NI patients (70.9%) compared to SS (47.2%) and PI (55.6%) patients (p<0.001). According to IMDC Prognostic Index, 20.2% were classified as favorable, 49% as intermediate, and 30.8% as poor-risk disease. Access to systemic treatment differed by healthcare insurance: 36.1%, 99.5%, and 100% for the NI, SS, and PI patients, respectively (p<0.001). NI patients received fewer lines of treatment, with 24.8% receiving only one line of treatment (p<0.001). Median overall survival (OS) was 13.9 months for NI, 98.9 months for SS, and 147.6 months for NI patients (p<0.001). In multivariate analysis, NI status, brain metastases, sarcomatoid features, bone metastases, no treatment were significantly associated with worse OS. Conclusion: OS in mRCC was affected by insurance availability in this resource-limited cohort of Mexican patients. These results underscore the need for effective strategies to achieve equitable healthcare access in an era of effective, yet costly systemic treatments.

Genomic Profile in a Non-Seminoma Testicular Germ-Cell Tumor Cohort Reveals a Potential Biomarker of Sensitivity to Platinum-Based Therapy.

Despite having a favorable response to platinum-based chemotherapies, ~15% of Testicular Germ-Cell Tumor (TGCT) patients are platinum-resistant. Mortality rates among Latin American countries have remained constant over time, which makes the study of this population of particular interest. To gain insight into this phenomenon, we conducted whole-exome sequencing, microarray-based comparative genomic hybridization, and copy number analysis of 32 tumors from a Mexican cohort, of which 18 were platinum-sensitive and 14 were platinum-resistant. We incorporated analyses of mutational burden, driver mutations, and SNV and CNV signatures. DNA breakpoints in genes were also investigated and might represent an interesting research opportunity. We observed that sensitivity to chemotherapy does not seem to be explained by any of the mutations detected. Instead, we uncovered CNVs, particularly amplifications on segment 2q11.1 as a novel variant with chemosensitivity biomarker potential. Our data shed light into understanding platinum resistance in a Latin-origin population.

Prognostic importance of DNA from human papillomavirus in patients with oral squamous cell carcinoma

Background: Survival of patients with oral squamous cell carcinoma (OSCC) is generally low, with the likelihood of locoregional recurrence or disease progression (LR/DP). Knowledge of prognostic factors for survival is key to achieving an understanding and increased survival. The present study aimed to identify prognostic factors for patients with OSCC, especially the presence of DNA from human papillomavirus (HPV). Material and Methods: Retrospective cohort study including 119 patients with OSCC treated at the National Cancer Institute in Mexico City (2009-2013). Clinical information was obtained from patient records including LR/DP. Formalin-fixed, paraffin-embedded tissues were obtained and used for detecting DNA from different types of HPV. Potential prognostic factors for Overall Survival (OS) were analyzed using the Cox proportional hazards model. Results: After model adjustment, factors associated with longer OS were a pre-treatment platelet count above 400,000/mm3 (HR=0.09, p=0.026) and response to primary treatment (HR=0.26, p=0.001). HPV DNA was present in 23 (19.3%) of the patients and importantly, type 16 found in 19 of them. Although survival of HPV-positive patients was longer, difference was not significant. However, among patients with LR/DP, HPV positivity was significantly associated with increased survival (HR=0.23, p=0.034). Importantly, survival was significantly different for HPV-positive patients with LR/DP > 6 months (HR=0.20, p=0.002), had higher absolute lymphocyte count at start of treatment (HR=0.50, p=0.028) or had local rescue treatment (HR=0.24, p=0.019). Conclusions: Although HPV positivity was not associated with a longer OS of OSCC patients, a better prognosis was significantly associated with HPV positivity and recurring or progressing disease, particularly with HPV type 16.(AU)

Which Larynx-Preservation Strategy Would Be Best for a Patient With Resectable, Locally Advanced, Hypopharynx Squamous Cell Carcinoma?

LP strategies should be considered only in patients with resectable stage III/IV larynx and hypopharynx SCC, ideally those who have a functional larynx. The choice of treatment must be discussed by a multidisciplinary team, and the patient must have an active role in making the decision. CRT and IC-RT are both approved larynx-preservation approaches. IC-RT has demonstrated high rates of LP without decreasing DFS or OS, compared with surgery. CRT has demonstrated better LP rates, as well as local control and LRC, compared with IC-RT, and it should be considered a standard of care.