Spontaneous pregnancy following intra-ovarian platelet-rich plasma administration in poor ovarian responders according to the POSEIDON criteria: A cross-sectional study.

Background: Female infertility, especially in those individuals with poor ovarian response (POR), is a challenge in the field of infertility and sterility. Recently, intra-ovarian platelet-rich plasma (IO-PRP) administration has been suggested as a possible co-treatment. Objective: This study aimed to investigate the biodemographic characteristics of individuals who experienced spontaneous pregnancy following IO-PRP. Materials and Methods: In this cross-sectional study, out of 1548 women diagnosed with POR who underwent IO-PRP, 596 individuals who completed their 2-yr follow-up period, were included. Different types of demographic and pre-intervention laboratory data (blood levels of anti-Müllerian hormone, luteinizing hormone, follicle-stimulating hormone, estradiol, prolactin, and their spouses' sperm analysis results) were collected from the files. Each individual was classified into a certain group according to the POSEIDON criteria, and their data were compared. Results: The results showed that 50 (8.39%) spontaneous pregnancies were observed. However, 8 were excluded from further analyses due to missing data in their critical variables. The most prevalent POSEIDON group was 4, with a prevalence of 17/42 (40.47%). Among the POSEIDON groups, covariates including the age of the individuals and their spouses, body mass index, anti-Müllerian hormone, and antral follicle/oocytes count following the latest IO-PRP significantly differed (p < 0.001, p < 0.001, p = 0.039, p < 0.001, and p = 0.022, respectively). Conclusion: The spontaneous pregnancy rate following IO-PRP among women with POR was low. However, significant differences in biodemographic and hormonal characteristics were observed between the groups with and without spontaneous pregnancy which could be useful in leading future studies on this subject.