ESPE Abstracts

Background: The androgen receptor (AR) is essential for the development of primary and secondary male characteristics and is activated by its ligand dihydrotestosterone (DHT). Reduced AR activity can cause undervirilization and infertility. We recently developed an assay to test AR function as a ligand-dependent transcriptional activator in human genital skin fibroblasts (GF). So far it is unclear, if AR expression levels correlate with AR function in the male external genital...

Background: In a large fraction of patients with clinically presumed Androgen Insensitivity Syndrome, no mutation of the Androgen Receptor gene can be detected. However, established Sanger sequencing techniques of the AR gene are often limited to the coding region.Objective and Hypotheses: To set up a next generation sequencing (NGS) approach of the entire AR locus (including UTRs, exons, introns, up- and downstream regions) for a comprehensive ...

Introduction: Androgen insensitivity syndrome (AIS) is a 46,XY difference of sex development (DSD) classically caused by mutations in the X-chromosomal androgen receptor (AR) gene. Nevertheless, in over 50% of individuals with clinical AIS no AR coding gene mutation can be found. We previously established an assay (apolipoprotein D (APOD) assay) that measures androgen dependent AR-activity in genital skin fibroblasts (GFs). Using this assay we identified a gro...

Objectives: Somatrogon, a long-acting recombinant human growth hormone (GH) consisting of the amino acid sequence of human GH (hGH) and three copies of the carboxy-terminal peptide (CTP) of human chorionic gonadotropin, is approved by the EMA for treatment of children with GH deficiency (GHD). In this phase 3 study, children with GHD received either somatrogon or Genotropin. The impact of testing positive for anti-drug antibodies to somatrogon (ADA+) on the ef...

Background: Once-daily growth hormone (GH) therapy is an effective treatment for children with growth hormone deficiency (GHD), but compliance wanes with ongoing treatment. A once -weekly GH, somatrogon (hGH-CTP), is being developed to reduce the treatment burden of daily dosing for children and caregivers and potentially improve compliance and long-term efficacy. The impact of once-weekly somatrogon on long-term safety, local tolerability and immunogenicity w...

Background: Growth hormone (GH) replacement therapy currently requires daily injections, which may cause poor compliance, inconvenience and distress for patients. CTP-modified hGH (MOD-4023) has been developed by OPKO Biologics for once-weekly administration in growth hormone-deficient (GHD) adults and children.Objective and hypotheses: The 24-month efficacy of once-weekly subcutaneous (SC) administration of MOD-4023 was evaluated in a Phase 2 study in G...