PROJECT ABSTRACT Infertility affects up to 13% of reproductive age couples across the globe but the underlying mechanistic basis of infertility and the role of infertility as an overall marker of general health is unclear. These knowledge gaps hinder the diagnosis, treatment and prevention of infertility leading to physical, psychological and financial burden to couples with infertility. To address these challenges, The Massachusetts General Hospital Harvard Center for Reproductive Medicine has assembled an integrative team of investigators with expertise in reproductive medicine, genomics, population genetics and genetic literacy who will conduct clinical translational investigation in humans with infertility: Aim 1: To elucidate the genetic and phenomic architecture of infertility through the lens of specific rare diseases and common traits; Aim 2: To catalyze a collaborative think-tank focused on reducing the suffering and costs of infertility, in a manner that is outward looking, forward thinking and integrates global perspectives; Aim 3: To nucleate a vibrant hub for outreach, training and community engagement that brings the scientific team closer to the patients they serve, the trainees they want to mentor, and the larger community of scientists and clinicians who are invested in reducing the burdens caused by infertility. These aims will be achieved using two Clinical Research projects which will be supported by a Genomics and Functional Core, Outreach Core and Administrative Core. Project 1 will perform next-generation sequencing and targeted genotype-driven phenotyping studies in clinical cohorts enriched for genetically driven infertility from admixed and consanguineous populations characterized by both hypogonadotropic and hypergonadotropic hypogonadism in both sexes. Project 2 will bring together >1,800,000 multi-ethnic population biobank samples to perform genome-wide association studies, phenome-wide association studies, and Mendelian randomization studies to implicate key biologic pathways determining fertility and synthesize the genetic results across infertility and related traits to characterize the effects of the identified genes and pathways on reproductive health and overall morbidity. The Genomics and Functional Core will provide genomic technologies, data analytics, computational and statistical support, and will generate genetically engineered human induced pluripotent cells for validation of Project 1 & 2 genetic discoveries. The Outreach Core will buoy Project 1 & 2 activities by engaging key stakeholders through patient group meetings, creating clinician-facing materials to enable communication of genetic results and launch a website inspired by design-thinking for broad dissemination to patients, families and clinicians. The Administrative Core will advance the Center’s scientific goals by providing timely support to foster engagement and communication between investigators, patients, research trainees and the broader...