genetic screening and etiological analysis was conducted on patients with ovarian insufficiency and decline in ovarian reserve. All patients were enrolled in the IVF-treated and non-IVF-treated groups, followed up for long-term treatment outcomes and genomic screening.

The cause of ovarian insufficiency and decline in ovarian reserve are not clear, but most researchers think the probable causes are mainly three aspects: chromosomal abnormalities, genetic factors and autoimmune diseases，But the majority of patients with normal chromosome karyotype analysis. The screening of pathogenic genes in patients with normal karyotype is the focus of current premature ovarian insufficiency(POI) and decline in ovarian reserve(DOR) etiology, to further explain the pathogenesis of patients, improve the diagnosis of those diseases and Clinical treatment.

Inclusion Criteria:

• Patients diagnosed as "premature ovarian insufficiency", "diminished ovarian reserve", "primary amenorrhea", " ovarian dysgenesis", " repeated implantation failure"

Exclusion Criteria:

• To rule out polycystic ovary syndrome（PCOS）, iatrogenic factors (such as surgery, radiotherapy and chemotherapy, etc.) lead to premature ovarian insufficiency in patients

Patients who come to the First Affiliated Hospital of Anhui Medical University Reproductive Center and diagnosed as "premature ovarian insufficiency", "diminished ovarian reserve", "primary amenorrhea", " ovarian dysgenesis", " repeated implantation failure"，Understand the content of the project and sign an informed consent form