hrp0095p1-308 | Growth and Syndromes | ESPE2022

Postnatal growth failure of aggrecan deficient mice is due to impaired growth plate chondrogenesis

Bendre Ameya , Ottosson Lars , Baroncelli Marta , Dou Zelong , Nilsson Ola

Background: Heterozygous Aggrecan (Acan) mutations cause autosomal short stature (ISS) with advanced bone age, early-onset osteoarthritis and intervertebral disc disease (OMIM#165800) in humans. Cartilage matrix deficiency mouse (Acancmd) has a naturally occurring 7 bp micro-deletion in aggrecan gene. Heterozygous Acancmd mice develop postnatal dwarfism with progressing age. However, the underlying cellular and molecular mechanisms causin...

hrp0097fc4.4 | Growth and syndromes (to include Turner syndrome) | ESPE2023

Growth failure in aggrecan haploinsufficiency is due to a decrease in growth plate matrix volume and hypertrophic cell size

Bendre Ameya , Ottosson Lars , Baroncelli Marta , Dou Zelong , Nilsson Ola

Background: Heterozygous loss-of-function mutations in the aggrecan gene (ACAN) cause autosomal dominant short stature with advanced bone age, early-onset osteoarthritis and intervertebral disc disease (SSOAOD; OMIM#165800). ACAN mutations is a relatively common finding in idiopathic short stature (ISS) and has been reported to be the cause of growth failure in approximately 2% of children with ISS. However, the underlying cellular and molecular mechanisms by ...

hrp0098p1-268 | Growth and Syndromes 4 | ESPE2024

Mechanisms of Growth Failure in a Mouse Model of Aggrecan Deficiency: Insights into Chondrocyte Function and Akt Signaling

Bendre Ameya , Ottosson Lars , Baroncelli Marta , Dou Zelong , Nilsson Ola

Background: Aggrecan is the most abundantly expressed extracellular matrix proteoglycan in growth plate cartilage and is crucial for its normal functioning. Heterozygous, loss-of-function mutations in the aggrecan gene (ACAN) cause autosomal dominant short stature with advanced bone age, early-onset osteoarthritis and intervertebral disc disease (SSOAOD; OMIM#165800). ACAN mutations are a relatively frequent finding of approximately 2% in coh...

hrp0098fc4.4 | Adrenals and HPA Axis 1 | ESPE2024

Crinecerfont, a Corticotropin-Releasing Factor Type 1 Receptor (CRF1) Antagonist, Reduced Excess Adrenal Androgens and Glucocorticoid Doses in Children and Adolescents with Classic Congenital Adrenal Hyperplasia: Results from CAHtalystTM Pediatric

Sarafoglou Kyriakie , S. Kim Mimi , Lodish Maya , I. Felner Eric , Martinerie Laetitia , J. Nokoff Natalie , Clemente Maria , Y. Fechner Patricia , G. Vogiatzi Maria , W. Speiser Phyllis , B.G. Rosales Gelliza , Roberts Eiry , S. Jeha George , Farber Robert , L. Chan Jean , Ottosson Lars , Baroncelli Marta , Dou Zelong , Nilsson Ola

Introduction: Children with classic congenital adrenal hyperplasia due to 21-hydroxylase deficiency (CAH) require glucocorticoid (GC) therapy to replace cortisol insufficiency and reduce excess adrenal androgens. Supraphysiological GC doses are typically required, predisposing patients to GC-related comorbidities. In Phase 2 studies, participants with CAH who received crinecerfont, a novel oral CRF1 antagonist, experienced reduction of the adrenal a...