A de novo FLCN mutation in a patient with spontaneous pneumothorax and renal cancer; a clinical and molecular evaluation

作者：Menko Fred H^*; Johannesma Paul C; van Moorselaar R Jeroen A; Reinhard Rinze; van Wae**erghe Jan Hein; Thunnissen Erik; Houweling Arjan C; Leter Edward M; Waisfisz Quinten; van Doorn Martijn B; Starink Theo M; Postmus Pieter E; Coull Barry J; van Steensel Maurice A M; Gille Johan J P

来源：Familial Cancer, 2013, 12(3): 373-379.

DOI：10.1007/s10689-012-9593-8

• Birt-Hogg-Dube syndrome
• Folliculin
• de novo mutation
• Pneumothorax
• Renal cancer

Birt-Hogg-Dub, syndrome (BHD) is an autosomal dominant condition due to germline FLCN (folliculin) mutations, characterized by skin fibrofolliculomas, lung cysts, pneumothorax and renal cancer. We identified a de novo FLCN mutation, c.499C %26gt; T (p.Gln167X), in a patient who presented with spontaneous pneumothorax. Subsequently, typical skin features and asymptomatic renal cancer were diagnosed. Probably, de novo FLCN mutations are rare. However, they may be under-diagnosed if BHD is not considered in sporadic patients who present with one or more of the syndromic features. Genetic and immunohistochemical analysis of the renal tumour indicated features compatible with a tumour suppressor role of FLCN. The finding that mutant FLCN was expressed in the tumour might indicate residual functionality of mutant FLCN, a notion which will be explored in future studies.

• 出版日期2013-9