Melanoma, an aggressive form of skin cancer that accounts for 75% of all skin-cancer-related deaths, is often detected later in people with darker skin complexions—and the consequences can be devastating, a Mayo Clinic study reveals.
While melanoma may be found less frequently in people with darker complexions than fair ones, this potentially serious form of cancer can strike anyone. The study, which consisted of 492,597 patients with melanoma, suggests that added vigilance in early screening is particularly needed for Black men, whose cancers are often found at later stages, leading to worse outcomes compared to white patients.
“Striking differences were seen when comparing non-Hispanic Black patients to white patients in how patients presented with the disease,” says surgical oncologist Tina Hieken, M.D., senior author of the study and a researcher at Mayo Clinic Comprehensive Cancer Center. “We saw more extremity melanoma, and more later-stage disease.”
Extremity melanoma refers to skin cancer that can develop on the arms, legs, hands, and feet. Various factors, including social risk factors and biological components, could be at play, but further research is needed to help determine why these differences exist.
Differences in sex-based immune response? The research found that Black female patients with melanoma fared better than Black male patients. Men tended to be older at diagnosis and more likely to have cancer that had spread to their lymph nodes compared to women. This translated to worse survival rates. The researchers learned that Black men with stage 3 melanoma have only a 42% chance of surviving for five years, compared to 71% for Black women.
One theory centers on variations in immune response.
“Several immune signals suggest that women may respond better to some immunotherapies than males,” says Dr. Hieken.
Researchers note that more studies focused on melanoma in a broader range of people, including more Black participants in clinical trials, is key to bridging this knowledge gap and potentially identifying more effective treatments.
“We want to broaden and deepen our reach to better understand the disease that affects all patients,” says Dr. Hieken.
A wake-up call in the battle against melanoma. Dr. Hieken notes that this study is a wake-up call for everyone battling to diagnose and cure melanoma, regardless of the patient’s sex or skin tone.
She emphasizes that healthcare professionals should carefully examine areas like palms, soles and under fingernails, where melanoma might be more challenging to spot on darker skin.
“We can incorporate screening for skin lesions or lesions under the nails into the visit for patients as part of their regular checkups,” says Dr. Hieken. “What we want to do is elevate care for our patients.”
The Mayo Clinic Robert D. and Patricia E. Kern Center for the Science of Health Care Delivery and Breast and Melanoma Surgical Oncology in the Department of Surgery supported this research. Review the study for a complete list of authors, disclosures and funding.
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Source: Excerpted and adapted from the article at https://newsnetwork.mayoclinic.org/discussion/melanoma-in-darker-skin-tones-race-and-sex-play-a-role-mayo-study-finds/
- Vincent Jacobbi, Mayo Clinic Communications, newsbureau@mayo.edu
Learn more:
Mayo Clinic Minute: Melanoma misconception — dark skin tones at risk too
Mayo Clinic Minute: Men need to take melanoma seriously
