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  • Title: FLCN gene-mutated renal cell neoplasms: mother and daughter cases with a novel germline mutation.
    Author: Nagashima Y, Furuya M, Gotohda H, Takagi S, Hes O, Michal M, Grossmann P, Tanaka R, Nakatani Y, Kuroda N.
    Journal: Int J Urol; 2012 May; 19(5):468-70. PubMed ID: 22211584.
    Abstract:
    Birt-Hogg-Dubé syndrome is a familial genodermatosis, of which patients frequently develop renal neoplasms, fibrofolliculomas and pneumatocele. Here, we report a mother and daughter with renal neoplasms surgically resected (69 and 46 years-of-age at surgery, respectively). The mother's tumor was diagnosed as an unclassified type renal cell carcinoma associated with microscopic tumorous nodules, whereas the daughter's tumor was a hybrid oncocytic/chromophobe tumor. The germline mutation analysis of the responsible gene, FCLN (the folliculin gene), showed a deletion of 18 bp in exon 5 (c.332_349del/p.H111_Q116del), predicting an alteration of the amino acid sequence of "HPSHPQ" replaced by a single amino acid, "L". This is a novel germline mutation of the FCLN gene that has not been previously reported.
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