hrp0092p1-365 | GH and IGFs (2) | ESPE2019

De Novo Formation of Neutralizing IGF-I Antibodies During rhIGF-1 Treatment in a Girl with IGFALS Deficiency as Distinct Adverse Event Interfering with Growth Promotion

Mittnacht Janna , Breil Thomas , Choukair Daniela , Duffert Christin , Hwa Vivian , Rosenfeld Ron , Bettendorf Markus

Background: IGFALS deficiency is a rare cause of GH insensitivity (GHI). We report a German girl with short stature who was born as 2nd child at 40 weeks of gestation. Her Caucasian parents were unrelated and healthy (target height 168 cm, SDS 0.2). She was born appropriately sized for gestational age (49 cm, SDS -1.2; 2950 g, SDS-1.2). Height (104.8 cm; SDS -2.94) and height velocity (5.1 cm / year; SDS -1.67) were reduced at the age of 6 years.</p...

hrp0092p2-269 | Sex Differentiation, Gonads and Gynaecology or Sex Endocrinology | ESPE2019

Pseudo-Precocious Puberty in Children Triggered by Incidental Transdermal Contamination with Topical Sex Steroids Through Parents

Yakovenko Vira , Choukair Daniela , Duffert Christin , Mittnacht Jana , Klose Daniela , Bettendorf Markus

Introduction: Pseudo-precocious puberty may be triggered by either endogenous or exogenous sex steroids. Accidental ingestion of contraceptives, anabolic steroids or life style products containing sex steroids as well as transdermal transmission of topical sex steroids may cause early onset of secondary sexual development.Objective: To report the clinical course of incidental contamination with topical sex steroids in ch...

hrp0098p2-48 | Bone, Growth Plate and Mineral Metabolism | ESPE2024

Two likely compound heterozygous variants in SLC34A1 causing idiopathic infantile hypercalcemia (IIH) type 2 - a case report

Maria Duffert Christin , Choukair Daniela , Syrbe Steffen , Henje Driedger Jan , Platzer Konrad , Bettendorf Markus

Children affected by idiopathic infantile hypercalcemia (IIH) may develop polyuria, polydipsia, failure to thrive, developmental delay and nephrocalcinosis already during the first weeks of life. Elevated levels of activated 1-,25(OH)2D3 have been shown to cause the characteristic increase in serum calcium levels in this disorder. Two major underlying genetic causes have been identified so far: in IIH type 1 loss-of-function mutations in CYP24A1 ...