2026-04-29T06:16:20Zhttps://repisalud.isciii.es/rest/oai/requestoai:repisalud.isciii.es:20.500.12105/176052024-02-08T14:41:29Zcom_20.500.12105_15322com_20.500.12105_2051col_20.500.12105_16927
Repisalud
author
Pajares, Bella
author
Porta, Javier
author
Porta, Jose María
author
Sousa, Cristina Fernández-de
author
Moreno, Ignacio
author
Porta, Daniel
author
Durán, Gema
author
Vega, Tamara
author
Ortiz, Inmaculada
author
Muriel, Carolina
author
Alba, Emilio
author
Márquez, Antonia
2024-02-08T14:41:29Z
2024-02-08T14:41:29Z
2018-06-08
http://hdl.handle.net/10668/12566
http://hdl.handle.net/20.500.12105/17605
29884136
10.1186/s12885-018-4537-9
1471-2407
BMC cancer
The BRCA1/2 mutation profile varies in Spain according to the geographical area studied. The mutational profile of BRCA1/2 in families at risk for hereditary breast and ovarian cancer has not so far been reported in Andalusia (southern Spain). We analysed BRCA1/2 germline mutations in 562 high-risk cases with breast and/or ovarian cancer from Andalusian families from 2010 to 2015. Among the 562 cases, 120 (21.4%) carried a germline pathogenic mutation in BRCA1/2; 50 in BRCA1 (41.7%) and 70 in BRCA2 (58.3%). We detected 67 distinct mutations (29 in BRCA1 and 38 in BRCA2), of which 3 in BRCA1 (c.845C > A, c.1222_1223delAC, c.2527delA) and 5 in BRCA2 (c.293 T > G, c.5558_5559delGT, c.6034delT, c.6650_6654delAAGAT, c.6652delG) had not been previously described. The most frequent mutations in BRCA1 were c.5078_5080delCTG (10%) and c.5123C > A (10%), and in BRCA2 they were c.9018C > A (14%) and c.5720_5723delCTCT (8%). We identified 5 variants of unknown significance (VUS), all in BRCA2 (c.5836 T > C, c.6323G > T, c.9501 + 3A > T, c.8022_8030delGATAATGGA, c.10186A > C). We detected 76 polymorphisms (31 in BRCA1, 45 in BRCA2) not associated with breast cancer risk. This is the first study reporting the mutational profile of BRCA1/2 in Andalusia. We identified 21.4% of patients harbouring BRCA1/2 mutations, 58.3% of them in BRCA2. We also characterized the clinical data, mutational profile, VUS and haplotype profile.
eng
Andalusian population
BRCA1/BRCA2 mutation
Genetic counselling
Hereditary breast and ovarian cancer
Recurrent mutation
Hereditary breast and ovarian cancer in Andalusian families: a genetic population study.
research article