Cord blood plasma could repair thin uterine lining

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

UMBILICAL CORD DONORS Donors of umbilical cord blood will be women (and their partners, if applicable) who give birth to a live newborn(s) in the Gynecology and Obstetrics service of HUP La Fe; the same umbilical cord collection criteria will be followed as standardized in HUP La Fe for the donation of this biological product. GROUP A Inclusion Criteria: * Patient information sheet and signed informed consent. * Female, acting voluntarily, aged between 18 and 48 years at the time of recruitment. * BMI ≥ 18 kg/m2 and ≤ 35 kg/m2. * Patients with premature ovarian failure (amenorrhea prior to 40 years of age and FSH \> 40 IU/L). Exclusion Criteria: * Active genital infection proven at the time of recruitment; chronic endometritis. * Known endometrial pathology. * Psychological disorder that may hinder study follow-up. * Positive results after viral safety analysis (HBsAg, HBcAb, HCV, HIV1, HIV2, syphilis). * Presenting any syndrome or condition that, from the principal investigator's point of view, could pose a risk to the study or to the patient. * Any significant clinical anomaly detected during the recruitment process; simultaneous participation in another clinical study that could affect the objectives of the present study or previous participation in this same study. GROUP B Inclusion Criteria: * Information and signed informed consent. * female, acting voluntarily, aged between 18 and 48 years at the time of recruitment. * body mass index (BMI): ≥ 18 kg/m2 and ≤ 35 kg/m2. * Patients undergoing an assisted reproduction cycle. * Endometrial thickness \< 5mm despite estrogen administration for more than 10 days and/or evidence of Asherman's Syndrome. Exclusion Criteria: * Active genital infection proven at the time of recruitment; chronic endometritis. * Known endometrial pathology. * Psychological disorder that may hinder study follow-up. * Positive results after viral safety analysis (HBsAg, HBcAb, HCV, HIV1, HIV2, syphilis). * Presenting any syndrome or condition that, from the principal investigator's point of view, could pose a risk to the study or to the patient. * Any significant clinical anomaly detected during the recruitment process; simultaneous participation in another clinical study that could affect the objectives of the present study or previous participation in this same study.