Brenda S. Castillo, M.D.

Dr. Brenda S. Castillo, M.D.


Research Focus & Metrics

Academic Career Length

3Years (2024-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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29 January 2024 in Annual Review of Medicine
Verified
Journal Article
Open access
CGCarmen E Guerra
Carmen E Guerra
PSPrateek V. Sharma
Prateek V. Sharma
BMBrenda S. Castillo, M.D.
Brenda S. Castillo, M.D.
The new generation of cancer early detection tests holds remarkable promise for revolutionizing and changing the paradigm of cancer early detection. Dozens of cancer early detection tests are being developed and evaluated. Some are already commercialized and available for use, most as a complement to and not in place of existing recommended cancer screening tests. This review evaluates existing single- and multi-cancer early detection tests (MCEDs), discussing their performance characteristics including sensitivity, specificity, positive and negative predictive values, and accuracy. It also critically looks at the potential harms that could result from these tests, including false positive and negative results, the risk of overdiagnosis and overtreatment, psychological and economic harms, and the risk of widening cancer inequities. We also review the large-scale, population-based studies that are being launched in the United States and United Kingdom to determine the impact of MCEDs on clinically relevant outcomes and implications for current practice.

6 February 2024 in Current Oncology
Verified
Journal Article
Open access
PDF file
SVSeiichi Villalona
Seiichi Villalona
BMBrenda S. Castillo, M.D.
Brenda S. Castillo, M.D.
CPCarlos Gustavo Chavez Perez
Carlos Gustavo Chavez Perez
AFAlana Ferreira
Alana Ferreira
INIsoris Nivar
Isoris Nivar
CGCarmen E Guerra
Carmen E Guerra
Financial toxicity adversely affects quality of life and treatment outcomes for patients with cancer. This scoping review examined interventions aimed at mitigating financial toxicity in adult patients with cancer and their effectiveness. We utilized five bibliographical databases to identify studies that met our inclusion criteria. The review included studies conducted among adult patients with cancer in the United States and published in English between January 2011 to March 2023. The review identified eight studies that met the inclusion criteria. Each of the studies discussed the implementation of interventions at the patient/provider and/or health system level. Collectively, the findings from this scoping review highlight both the limited number of published studies that are aimed at mitigating financial toxicity and the need to create and assess interventions that directly impact financial toxicity in demographically diverse populations of adult patients with cancer.

28 May 2024 in Current Oncology
Verified
Journal Article
Open access
PDF file
BMBrenda S. Castillo, M.D.
Brenda S. Castillo, M.D.
LBLeigh Boehmer
Leigh Boehmer
JSJanelle Schrag
Janelle Schrag
AHAlexandra Howson
Alexandra Howson
RORandall Oyer
Randall Oyer
CGCarmen E Guerra
Carmen E Guerra
NCCN guidelines indicate that cancer clinical trials (CCTs) are the best management for patients with cancer. However, only 5% of patients enroll in them. We examined oncologists’ perceived barriers and facilitators to discussing CCTs. This qualitative study was part of the ASCO-ACCC Initiative to Increase Racial and Ethnic Diversity in Clinical Trials. Barriers and facilitators at the system, trial, provider, and patient levels were examined. To achieve triangulation, patient encounters were reviewed using chart-stimulated recall (CSR) methods, thereby obtaining a valid assessment of physician performance. Ten oncology providers participated in this study. Nine were oncologists, and one was a clinical research coordinator; five were female; four were White; three were Asian; and three were Black. Barriers to offering CCTs were a lack of trial availability; ineligibility; a lack of knowledge; assumptions about patient interest, benefits, or harms; patient’s disease factors; and negative attitudes. Facilitators of offering CCTs were a physical space to discuss trials; greater trial availability; a systematic approach to offering trials; patient factors; patients seeking trials; a lack of comorbidities; patients being younger in age; patients being aware of, asking about, or hearing of trials from their surgeon; and higher levels of altruism. Many of the cited barriers are addressable with the cited facilitators. A larger study is needed to generalize and validate these findings.