RT Journal Article T1 Frequency and characteristics of familial melanoma in Spain: the FAM-GEM-1 Study. A1 Márquez-Rodas, Iván A1 Martín González, Manuel A1 Nagore, Eduardo A1 Gómez-Fernández, Cristina A1 Avilés-Izquierdo, Jose Antonio A1 Maldonado-Seral, Cayetana A1 Soriano, Virtudes A1 Majem-Tarruella, Margarita A1 Palomar, Virginia A1 Maseda, Rocio A1 Martín-Carnicero, Alfonso A1 Puertolas, Teresa A1 Godoy, Elena A1 Cerezuela, Pablo A1 Ochoa de Olza, Maria A1 Campos, Begoña A1 Perez-Ruiz, Elisabeth A1 Soria, Ainara A1 Gil-Arnaiz, Irene A1 Gonzalez-Cao, Maria A1 Galvez, Elisa A1 Arance, Ana A1 Belon, Joaquin A1 Cruz-Merino, Luis de la A1 Martín-Algarra, Salvador K1 Melanoma K1 Risk factor K1 Family history K1 Multiple melanoma K1 Amilial melanoma patients K1 Dermatología K1 Mitosis K1 Neoplasias Pancreáticas K1 Pronóstico K1 Factores de Riesgo K1 Quemadura Solar AB INTRODUCTIONFamilial history of melanoma is a well-known risk factor for the disease, and 7% melanoma patients were reported to have a family history of melanoma. Data relating to the frequency and clinical and pathological characteristics of both familial and non-familial melanoma in Spain have been published, but these only include patients from specific areas of Spain and do not represent the data for the whole of Spain.PATIENTS AND METHODSAn observational study conducted by the Spanish Group of Melanoma (GEM) analyzed the family history of patients diagnosed with melanoma between 2011 and 2013 in the dermatology and oncology departments.RESULTSIn all, 1047 patients were analyzed, and 69 (6.6%) fulfilled criteria for classical familial melanoma (two or more first-degree relatives diagnosed with melanoma). Taking into account other risk factors for familial melanoma, such as multiple melanoma, pancreatic cancer in the family or second-degree relatives with melanoma, the number of patients fulfilling the criteria increased to 165 (15.8%). Using a univariate analysis, we determined that a Breslow index of less than 1 mm, negative mitosis, multiple melanoma, and a history of sunburns in childhood were more frequent in familial melanoma patients, but a multivariate analysis revealed no differences in any pathological or clinical factor between the two groups.CONCLUSIONSSimilar to that observed in other countries, familial melanoma accounts for 6.6% of melanoma diagnoses in Spain. Although no differences in the multivariate analysis were found, some better prognosis factors, such as Breslow index, seem more frequent in familial melanoma, which reflect a better early detection marker and/or a different biological behavior. PB Public Library of Science YR 2015 FD 2015-04-13 LK http://hdl.handle.net/10668/1964 UL http://hdl.handle.net/10668/1964 LA en NO Márquez-Rodas I, Martín González M, Nagore E, Gómez-Fernández C, Avilés-Izquierdo JA, Maldonado-Seral C, et al. Frequency and characteristics of familial melanoma in Spain: the FAM-GEM-1 Study. PLoS ONE. 2015; 10(4):e0124239 NO Journal Article; DS RISalud RD Apr 8, 2025