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Novel RB1 gene constitutional mutations found in Polish patients with familial and/or bilateral retinoblastoma
Author(s) -
Jakubowska Anna,
Zajaczek Stanislaw,
Haus Olga,
Limon Janusz,
Kostyk Ewa,
Krzystolik Zofia,
Lubinski Jan
Publication year - 2001
Publication title -
human mutation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.981
H-Index - 162
eISSN - 1098-1004
pISSN - 1059-7794
DOI - 10.1002/humu.1220
Subject(s) - retinoblastoma , biology , genetics , germline , gene , germline mutation , mutation , malignancy
Retinoblastoma is the most common intraocular malignancy in children. It is estimated that 60 percent of cases are nonhereditary and unilateral, 15% are hereditary and unilateral, and 25 percent are hereditary and bilateral. Hereditary predisposition for retinoblastoma is caused by germline mutations in the RB1 gene and is transmitted in an autosomal dominant manner. Most of the reported mutations are unique to one family, but there are sites where mutations are recurrent. We have performed RB1 gene mutation analysis in eight patients with familial and/or bilateral retinoblastoma by DNA/RNA sequencing. Constitutional mutations were found in five out of eight patients. Three mutations were novel: g.IVS7+5G>A, g.156709T>A, and g.IVS21+1G>A (p.G203‐E240del, p.Y659X, and p.I703‐E737del). © Wiley‐Liss, Inc.