The NICHD Fellowship in Pediatric and Adolescent Gynecology (PAG) is comprised of faculty from three institutions: The National Institute of Child Health and Human Development (NICHD), MedStar Washington Hospital Center (MWHC) and Childrens National Health System (CNHS). Previously housed at MedStar Washington Hospital Center, the Pediatric and Adolescent Gynecology Fellowship has been training fellows since 2010 with the mission to ensure the graduate possesses the knowledge, skills, and professional attributes essential to be able to function as a consultant to pediatricians, family practitioners, obstetricians and gynecologists for girls from birth up to age 18-21 years with pediatric gynecologic concerns as well as older women born with congenital anomalies. Pediatric and Adolescent Gynecology is closely related to Reproductive Endocrinology and thus this program will be synergistic with the existing Fellowship in Reproductive Endocrinology and Infertility. Impaired gonadal function affects children with many conditions including: those receiving gonadotoxic therapy due to cancer, hematologic and immune conditions, those with genetic conditions such as Turner syndrome, classic galactosemia, Blepharophimosis, Ptosis, Epicanthus Inversus Syndrome (BPES), individuals with disorders of sex development as well as transgender youth receiving puberty suppression and cross sex hormones. Projects from Dr. Gomez-Lobos laboratory include research on ovarian tissue cryopreservation for special populations, fertility preservation in children with toxin exposures to the gonads, and defining ovarian tissues and cellular compartments