OBJECTIVE: To study a new sequence variant at the beginning of the CAG repeat in the exon 1 of the androgen receptor gene. DESIGN: Controlled clinical study. SETTINGS: Healthy volunteers in an academic research environment. PATIENT(S): Sixty-two Finnish men with spermatogenic failure and 60 controls. INTERVENTION(S): ABI PRISM 377 (Applied Biosystems, Foster City, CA) automated sequencing. MAIN OUTCOME MEASURE(S): Determining the sequence around the CAG repeat of the AR gene. RESULT(S): A new 173A-->T (Q58L) substitution at the beginning of the CAG repeat in the transactivation-regulating domain of the androgen receptor was found in 2 infertile Finnish men but not in 60 other infertile men or 60 controls. CONCLUSION(S): As the polyglutamine tract coded by the CAG repeat is crucial to spermatogenesis, the 173A-->T (Q58L) substitution might be the cause of infertility in these two Finnish men.
OBJECTIVE: To study a new sequence variant at the beginning of the CAG repeat in the exon 1 of the androgen receptor gene. DESIGN: Controlled clinical study. SETTINGS: Healthy volunteers in an academic research environment. PATIENT(S): Sixty-two Finnish men with spermatogenic failure and 60 controls. INTERVENTION(S): ABI PRISM 377 (Applied Biosystems, Foster City, CA) automated sequencing. MAIN OUTCOME MEASURE(S): Determining the sequence around the CAG repeat of the AR gene. RESULT(S): A new 173A-->T (Q58L) substitution at the beginning of the CAG repeat in the transactivation-regulating domain of the androgen receptor was found in 2 infertile Finnish men but not in 60 other infertile men or 60 controls. CONCLUSION(S): As the polyglutamine tract coded by the CAG repeat is crucial to spermatogenesis, the 173A-->T (Q58L) substitution might be the cause of infertility in these two Finnish men.
Authors: Nicolas Kalfa; Pascal Philibert; Ralf Werner; Françoise Audran; Anu Bashamboo; Hélène Lehors; Myriam Haddad; Jean Michel Guys; Rachel Reynaud; Pierre Alessandrini; Kathy Wagner; Jean Yves Kurzenne; Florence Bastiani; Jean Bréaud; Jean Stéphane Valla; Gérard Morisson Lacombe; Mattea Orsini; Jean-Pierre Daures; Olaf Hiort; Françoise Paris; Kenneth McElreavey; Charles Sultan Journal: PLoS One Date: 2013-04-30 Impact factor: 3.240