CYP11B1 variants influence skeletal maturation via alternative splicing

Olja Grgic, Matthew R. Gazzara, Alessandra Chesi, Carolina Medina-Gomez, Diana L. Cousminer, Jonathan A. Mitchell, Vid Prijatelj, Jard de Vries, Enisa Shevroja, Shana E. McCormack, Heidi J. Kalkwarf, Joan M. Lappe, Vicente Gilsanz, Sharon E. Oberfield, John A. Shepherd, Andrea Kelly, Soroosh Mahboubi, Fabio R. Faucz, Richard A. Feelders, Frank H. de JongAndre G. Uitterlinden, Jenny A. Visser, Louis R. Ghanem, Eppo B. Wolvius, Leo J. Hofland, Constantine A. Stratakis, Babette S. Zemel, Yoseph Barash, Struan F.A. Grant, Fernando Rivadeneira*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

We performed genome-wide association study meta-analysis to identify genetic determinants of skeletal age (SA) deviating in multiple growth disorders. The joint meta-analysis (N = 4557) in two multiethnic cohorts of school-aged children identified one locus, CYP11B1 (expression confined to the adrenal gland), robustly associated with SA (rs6471570-A; β = 0.14; P = 6.2 × 10−12). rs6410 (a synonymous variant in the first exon of CYP11B1 in high LD with rs6471570), was prioritized for functional follow-up being second most significant and the one closest to the first intron-exon boundary. In 208 adrenal RNA-seq samples from GTEx, C-allele of rs6410 was associated with intron 3 retention (P = 8.11 × 10−40), exon 4 inclusion (P = 4.29 × 10−34), and decreased exon 3 and 5 splicing (P = 7.85 × 10−43), replicated using RT-PCR in 15 adrenal samples. As CYP11B1 encodes 11-β-hydroxylase, involved in adrenal glucocorticoid and mineralocorticoid biosynthesis, our findings highlight the role of adrenal steroidogenesis in SA in healthy children, suggesting alternative splicing as a likely underlying mechanism.

Original languageEnglish
Article number1274
JournalCommunications Biology
Volume4
Issue number1
DOIs
Publication statusPublished - 9 Nov 2021

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