Two Novel Biallelic Mutations in PSMC3IP in a Chinese Patient Affected by Primary Ovarian Insufficiency: Case Report and Review of the Literature

Background: Premature ovarian insufficiency (POI) is a heterogeneous condition occurring when a woman experiences a loss of ovarian activity before the age of 40. It is one of the most common reproductive endocrine diseases in women of childbearing age. Here, we investigated the clinical manifestations and genetic features of a Chinese patient affected by POI.Methods: We applied next-generation whole-exome capture sequencing with Sanger direct sequencing to the proband and her clinically unaffected family members. Results: Two novel compound heterozygous mutations were identified in the PSMC3IP gene. The first is a splicing mutation (c.597+1G>T) that was inherited from her father, while the second mutation (c.268G>C p.D90H) was also discovered in her mother and younger sister. The two mutations were co-segregated with the disease phenotype in the family. Conclusions: To our knowledge, this is the first report of PSMC3IP mutations causing POI in the Chinese population. Our findings further support the key role of the PSMC3IP gene in the etiology of POI. However, additional studies are required to explore the underlying molecular mechanisms involved.