Heterozygous NPR2 Variants in Idiopathic Short Stature
| Autor: | Lana Stavber, Maria Joao Gaia, Tinka Hovnik, Barbara Jenko Bizjan, Maruša Debeljak, Jernej Kovač, Jasna Šuput Omladič, Tadej Battelino, Primož Kotnik, Klemen Dovč |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Genes, Vol 13, Iss 6, p 1065 (2022) |
| Druh dokumentu: | article |
| ISSN: | 2073-4425 40750442 |
| DOI: | 10.3390/genes13061065 |
| Popis: | Heterozygous variants in the NPR2 gene, which encodes the B-type natriuretic peptide receptor (NPR-B), a regulator of skeletal growth, were reported in 2–6% cases of idiopathic short stature (ISS). Using next-generation sequencing (NGS), we aimed to assess the frequency of NPR2 variants in our study cohort consisting of 150 children and adolescents with ISS, describe the NPR2 phenotypic spectrum with a growth pattern including birth data, and study the response to growth hormone (GH) treatment. A total of ten heterozygous pathogenic/likely pathogenic NPR2 variants and two heterozygous NPR2 variants of uncertain significance were detected in twelve participants (frequency of causal variants: 10/150, 6.7%). During follow-up, the NPR2 individuals presented with a growth pattern varying from low–normal to significant short stature. A clinically relevant increase in BMI (a mean gain in the BMI SDS of +1.41), a characteristic previously not reported in NPR2 individuals, was observed. In total, 8.8% participants born small for their gestational age (SGA) carried the NPR2 causal variant. The response to GH treatment was variable (SDS height gain ranging from −0.01 to +0.74). According to the results, NPR2 variants present a frequent cause of ISS and familial short stature. Phenotyping variability in growth patterns and variable responses to GH treatment should be considered. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
|