Darrion Mitchell

Dr. Darrion Mitchell

orcid

Research Focus & Metrics

Academic Career Length

9Years (2018-Present)

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

Representative Publications

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15 March 2023 in Cancers
Verified
Journal Article
Open access
PDF file
SBSujith Baliga
Sujith Baliga
VYVedat O. Yildiz
Vedat O. Yildiz
JBJose G. Bazan
Jose G. Bazan
Joshua PalmerJoshua Palmer
Joshua Palmer
SJSachin R Jhawar
Sachin R Jhawar
MGMauricio Gamez
Mauricio Gamez
Background: Racial/ethnic (R/E) minorities with head and neck squamous cell carcinoma (HNSCC) have worse survival outcomes compared to White patients. While disparities in patient outcomes for R/E minorities have been well documented, the specific drivers of the inferior outcomes remain poorly understood. Patients and Methods: This was a population-based retrospective cohort study that analyzed HNSCC patients using the National Cancer Database (NCDB) from 2000–2016. Patient outcomes were stratified by R/E groups including White, Black, Hispanic, Native American/Other, and Asian. The main outcome in this study was overall survival (OS). Univariate time-to-event survival analyses were performed using the Kaplan–Meier product limit estimates and the log-rank test to evaluate the differences between strata. Results: There were 304,138 patients with HNSCC identified in this study, of which 262,762 (86.3%) were White, 32,528 (10.6%) were Black, 6191 were Asian (2.0%), and 2657 were Native American/Other (0.9%). Black R/E minorities were more likely to be uninsured (9% vs. 5%, p < 0.0001), have Medicaid insurance (22% vs. 8%, p < 0.0001), be in a lower income quartile (<30,000, 42% vs. 13%, p < 0.0001), have metastatic disease (5% vs. 2%, p < 0.001), and have a total treatment time 6 days longer than White patients (median 107 vs. 101 days, p < 0.001). The 5-year OS for White, Black, Native American/Other, and Asian patients was 50.8%, 38.6%, 51.1%, and 55.8%, respectively. Among the oropharynx HNSCC patients, the 5-year OS rates in p16+ White, Black, and Asian patients were 65.7%, 39.4%%, and 55%, respectively. After a multivariate analysis, Black race was still associated with an inferior OS (HR:1.09, 95% CI: 1.03–1.15, p = 0.002). Conclusions: This large cohort study of HNSCC patients demonstrates that Black race is independently associated with worse OS, in part due to socioeconomic, clinical, and treatment-related factors.

3 May 2021 in JAMA Network Open
Verified
Journal Article
Closed access
PDF file
BOBismarck C. Odei
Bismarck C. Odei
RJReshma Jagsi
Reshma Jagsi
DDDayssy Alexandra Diaz
Dayssy Alexandra Diaz
DADaniel Addison
Daniel Addison
AAAndrea Arnett
Andrea Arnett
DMDarrion Mitchell
Darrion Mitchell
Diversity in academic leadership is critical in fostering innovative solutions to dynamic challenges in medicine and meeting the needs of an increasingly diverse workforce.1 Prior studies2 have documented underrepresentation of some racial and ethnic groups in academia and in the departmental chair position; however, it is unknown whether these disparities persist currently and whether they are reflected similarly within individual specialties. Consequently, this study evaluates equitable racial and ethnic diversity among departmental chairs and evaluates the racial/ethnic composition of faculty in academia, which is the pipeline for medical leadership.

1 April 2021 in JAMA Internal Medicine
Verified
Journal Article
Open access
PDF file
BOBismarck C. Odei
Bismarck C. Odei
PGPhylicia Gawu
Phylicia Gawu
SBSonu Bae
Sonu Bae
DFDenise Fabian
Denise Fabian
JOJames Odei
James Odei
DMDarrion Mitchell
Darrion Mitchell
Although the gender gap in medical school matriculation has closed,1 the representation of women in leadership roles in academic medicine has been reported to be low, particularly among departmental chairs.2 This study evaluates the extent of progress in female representation among program directors (PDs), chairs, and deans to provide a valuable benchmark by which to evaluate future progress.

1 September 2021 in Advances in Radiation Oncology
Verified
Journal Article
Open access
BOBismarck Odei
Bismarck Odei
JKJenna Kahn
Jenna Kahn
EHEmma Brey Holliday
Emma Brey Holliday
DDDayssy Alexandra Diaz
Dayssy Alexandra Diaz
EBErika Bello-Pardo
Erika Bello-Pardo
DMDarrion Mitchell
Darrion Mitchell
We aimed to evaluate the growth of women within the general radiation oncology (RO) workforce in comparison to the growth among other medical specialties. We also sought to create a predictive model for gender diversity to guide future recruitment efforts. We identified 16 medical specialties, including RO, for analyses. We used data from the Association of American Colleges and assessed female representation at 4 time points (2006, 2011, 2016, and 2020). Additionally, we determined characteristics of medical specialties that were predictive of increased gender diversity. We performed univariate statistical analysis with linear regression to evaluate factors predictive of greater gender diversity among the medical specialties in our cohort. The proportion of women within the represented specialties increased over time. Obstetrics/gynecology (14,750 [2006], 23,921 [2020]; 18.7% absolute growth) and dermatology (3568 [2006], 6329 [2020]; 15.1% absolute growth) experienced the highest absolute growth in female representation between 2006 and 2020. When assessing changes between various time points in RO, the absolute change in female physicians increased by 1.5% between 2006 and 2011, by 2.2% between 2011 and 2016, and by only 0.4% between 2016 and 2020, which was the lowest growth pattern relative to the other 15 specialties. Factors predictive of gender diversity among specialties were lower average step 1 scores (P = .0056), fewer years of training (P = .0078), fewer work hours (P = .046), the availability of a standard third year clerkship for a given specialty (P = .0061), and a high baseline number of female physicians within a specialty (P = .0078). Research activities (P = .099) and interest among matriculating medical students (P = .28) were not statistically significant. The percentage of women in RO lags behind other medical specialties and has been notably low in the last few years. Interventions that incorporate novel initiatives proposed within this study may accelerate current recruitment milestones.

1 September 2020 in Cancers
Verified
Journal Article
Open access
PDF file
SBSujith Baliga
Sujith Baliga
BKBrett Klamer
Brett Klamer
SJSachin R Jhawar
Sachin R Jhawar
MGMAURICIO GAMEZ
MAURICIO GAMEZ
DMDarrion Mitchell
Darrion Mitchell
DBDukagjin M. Blakaj
Dukagjin M. Blakaj
Trans-oral robotic surgery (TORS) has emerged as an important surgical treatment option in the management of human papillomavirus (HPV)-positive and -negative oropharynx cancer. However, treatment selection is paramount to ensure that patients will not require multimodality adjuvant therapy. In this study, we determined predictors of adjuvant therapy in TORS-treated patients. The National Cancer Database (NCDB) was used to identify patients with newly diagnosed clinical T1-T4, N0-N3 oropharyngeal squamous cell carcinoma who underwent TORS between 2010–2016. Kaplan–Meier survival analysis was used to estimate overall survival (OS). A total of 2999 patients were studied, and the five-year OS for the entire cohort was 82.5%, and for HPV-positive and -negative cohorts it was 88.3% and 67.9%, respectively (p < 0.001). Among all patients treated with TORS, 35.1% of patients received no additional treatment, 33.5% received adjuvant radiation alone (RT), and 31.3% received adjuvant chemoradiation. The N stage was pathologically upstaged in 629 (20.9%) patients after TORS. Patients treated at higher-volume centers were more likely to have negative surgical margins (OR: 0.96, 95% CI: 0.94, 0.98, p < 0.001), but this did not influence the receipt of adjuvant therapy. The high rate of adjuvant multimodality treatment after TORS suggests a need for improved patient selection. Limitations of this study, including lack of data on loco-regional control, progression free survival, acute and late toxicities, and utilization of pretreatment PET/CT imaging, should be addressed in future studies.

5 March 2024 in Cancers
Verified
Journal Article
Open access
PDF file
RURituraj Upadhyay
Rituraj Upadhyay
EGEmile Gogineni
Emile Gogineni
GTGlenis Tocaj
Glenis Tocaj
SMSung Jun Ma
Sung Jun Ma
MBMarcelo Bonomi
Marcelo Bonomi
DBDukagjin M. Blakaj
Dukagjin M. Blakaj
Objectives: Patients with recurrent and metastatic head and neck cancer (HNC) have limited treatment options. ‘QuadShot’ (QS), a hypofractionated palliative radiotherapy regimen, can provide symptomatic relief and local control and may potentiate the effects of immune checkpoint inhibitors (ICIs). We compared outcomes of QS ± concurrent ICIs in the palliative treatment of HNC. Materials and Methods: We identified patients who received ≥three cycles of QS from 2017 to 2022 and excluded patients without post-treatment clinical evaluation or imaging. Outcomes for patients who received QS alone were compared to those treated with ICI concurrent with QS, defined as receipt of ICI within 4 weeks of QS. Results: Seventy patients were included, of whom 57% received concurrent ICI. Median age was 65.5 years (interquartile range [IQR]: 57.9–77.8), and 50% patients had received prior radiation to a median dose of 66 Gy (IQR: 60–70). Median follow-up was 8.8 months. Local control was significantly higher with concurrent ICIs (12-month: 85% vs. 63%, p = 0.038). Distant control (12-month: 56% vs. 63%, p = 0.629) and median overall survival (9.0 vs. 10.0 months, p = 0.850) were similar between the two groups. On multivariable analysis, concurrent ICI was a significant predictor of local control (HR for local failure: 0.238; 95% CI: 0.073–0.778; p = 0.018). Overall, 23% patients experienced grade 3 toxicities, which was similar between the two groups. Conclusions: The combination of QS with concurrent ICIs was well tolerated and significantly improved local control compared to QS alone. The median OS of 9.4 months compares favorably to historical controls for patients with HNC treated with QS. This approach represents a promising treatment option for patients with HNC unsuited for curative-intent treatment and warrants prospective evaluation.