The Premature ovarian failure (POF) is a rare syndrome observed in women under 40 who induced estrogen deficiency and often leads to infertility final. The etiologies of POF remain unknown in more than 85% of cases. There are 5-10 % of familial cases.The main objective of this study is to recruit, phenotype and genotype 20 families with at least two subjects with nonsyndromic POF in order to identify new loci using a single technical standard nucleotide polymorphisms (SNPs). This study will also include related population and population control.