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Abstract Title:

Decreased vitamin D serum levels at melanoma diagnosis are associated with tumor ulceration and high tumor mitotic rate.

Abstract Source:

Melanoma Res. 2019 Aug 28. Epub 2019 Aug 28. PMID: 31469708

Abstract Author(s):

Oscar M Moreno-Arrones, Josh Zegeer, Michael Gerbo, Esperanza Manrique-Silva, Celia Requena, Víctor Traves, Eduardo Nagore

Article Affiliation:

Oscar M Moreno-Arrones

Abstract:

The aim of this study is to evaluate the relation between 25-hydroxyvitamin D levels at diagnosis and pathological characteristics in primary invasive melanoma. A cross-sectional study was designed based on a series of 204 consecutive patients diagnosed of invasive melanomas in the 2013-2017 period at a single institution. 25-hydroxyvitamin D serum levels at diagnosis were assessed, and three groups were defined by vitamin D status: deficiency, insufficiency, and sufficiency. Clinical and pathological characteristics were compared between the groups by Chi-square test. Logistic regression models were performed to evaluate the association between vitamin D status and Breslow thickness, ulceration, and tumor mitotic rate. A significant association between vitamin D levels at diagnosis and location, tumor mitotic rate, and ulceration was found; and a borderline association with Breslow thickness and BMI. Deficient levels were found in 7.8% of patients and increased the risk of presenting ulcerated tumors [odds ratio: 6.8 (95% confidence interval: 1.5-29.7; P = 0.012)] and with a tumor mitotic rate greater than 1 mitosis/mm [odds ratio: 6.0 (95% confidence interval: 1.4-25.1; P = 0.014)]. A marginal increased risk of tumor thickness greater than 1 mm was also observed [odds ratio: 3.7 (95% confidence interval: 1.0-13.9; P = 0.057)]. Our study suggests a role of vitamin D levels in melanoma aggressiveness and raises the question as to whether vitamin D levels should be monitored, or even supplemented, in people with low yearly sun exposure.

Study Type : Human Study

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