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Sex Differences in Odds of Brain Metastasis and Outcomes by Brain Metastasis Status after Advanced Melanoma Diagnosis.
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- Author(s): Cioffi, Gino; Ascha, Mustafa S.; Waite, Kristin A.; Dmukauskas, Mantas; Wang, Xiaoliang; Royce, Trevor J.; Calip, Gregory S.; Waxweiler, Timothy; Rusthoven, Chad G.; Kavanagh, Brian D.; Barnholtz-Sloan, Jill S.
- Source:
Cancers; May2024, Vol. 16 Issue 9, p1771, 12p- Subject Terms:
MELANOMA prognosis; BRAIN tumor diagnosis; MELANOMA diagnosis; SURVIVAL rate; RESEARCH funding; SEX distribution; LOGISTIC regression analysis; DESCRIPTIVE statistics; MULTIVARIATE analysis; METASTASIS; ODDS ratio; MEDICAL records; ACQUISITION of data; PROGRESSION-free survival; CONFIDENCE intervals; BRAIN tumors; OVERALL survival; PROPORTIONAL hazards models; DISEASE complications - Source:
- Additional Information
- Abstract: Simple Summary: Sex differences in cancer are well-established. However, less is known about sex differences in the diagnosis of brain metastasis and outcomes among patients with advanced melanoma. Using the nationwide Flatiron Health electronic health record-derived de-identified database, this study showed that males had greater odds of brain metastasis, and poorer real-world overall survival compared to females among those with brain metastasis, while there were no sex differences in clinical outcomes for those with advanced melanoma without brain metastasis. Sex differences in cancer are well-established. However, less is known about sex differences in diagnosis of brain metastasis and outcomes among patients with advanced melanoma. Using a United States nationwide electronic health record-derived de-identified database, we evaluated patients diagnosed with advanced melanoma from 1 January 2011–30 July 2022 who received an oncologist-defined rule-based first line of therapy (n = 7969, 33% female according to EHR, 35% w/documentation of brain metastases). The odds of documented brain metastasis diagnosis were calculated using multivariable logistic regression adjusted for age, practice type, diagnosis period (pre/post-2017), ECOG performance status, anatomic site of melanoma, group stage, documentation of non-brain metastases prior to first-line of treatment, and BRAF positive status. Real-world overall survival (rwOS) and progression-free survival (rwPFS) starting from first-line initiation were assessed by sex, accounting for brain metastasis diagnosis as a time-varying covariate using the Cox proportional hazards model, with the same adjustments as the logistic model, excluding group stage, while also adjusting for race, socioeconomic status, and insurance status. Adjusted analysis revealed males with advanced melanoma were 22% more likely to receive a brain metastasis diagnosis compared to females (adjusted odds ratio [aOR]: 1.22, 95% confidence interval [CI]: 1.09, 1.36). Males with brain metastases had worse rwOS (aHR: 1.15, 95% CI: 1.04, 1.28) but not worse rwPFS (adjusted hazard ratio [aHR]: 1.04, 95% CI: 0.95, 1.14) following first-line treatment initiation. Among patients with advanced melanoma who were not diagnosed with brain metastases, survival was not different by sex (rwOS aHR: 1.06 [95% CI: 0.97, 1.16], rwPFS aHR: 1.02 [95% CI: 0.94, 1.1]). This study showed that males had greater odds of brain metastasis and, among those with brain metastasis, poorer rwOS compared to females, while there were no sex differences in clinical outcomes for those with advanced melanoma without brain metastasis. [ABSTRACT FROM AUTHOR]
- Abstract: Copyright of Cancers is the property of MDPI and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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