# Ventriculosubgaleal shunt placement for hydrocephalus in osteogenesis imperfecta with novel compound heterozygous CRTAP variants

**Authors:** Shintaro Nakamura, Kyosuke Ibi, Hiroyuki Tanaka, Hirokazu Takami, Keita Okada, Nao Takasugi, Motohiro Kato, Naoto Takahashi, Takanobu Inoue

PMC · DOI: 10.1038/s41439-024-00274-z · 2024-03-28

## TL;DR

A novel treatment for hydrocephalus in a severe bone disorder is described, involving a shunt placement and new genetic findings.

## Contribution

The paper introduces a novel treatment approach for hydrocephalus in osteogenesis imperfecta and reports new CRTAP gene variants.

## Key findings

- Ventriculosubgaleal shunt placement was effective and safe for treating hydrocephalus in an infant with severe osteogenesis imperfecta.
- Compound heterozygous CRTAP variants were identified as the genetic cause in the patient.
- The described treatment strategy provides a potential solution for managing hydrocephalus in this rare condition.

## Abstract

Osteogenesis imperfecta is characterized by frequent fractures, bone deformities, and other systemic symptoms. Severe osteogenesis imperfecta may progress to hydrocephalus; however, treatment strategies for this complication remain unclear. Here, we describe severe osteogenesis imperfecta in an infant with symptomatic hydrocephalus treated with ventriculosubgaleal shunt placement. Targeted next-generation sequencing revealed novel compound heterozygous CRTAP variants, i.e., NM_006371.5, c.241 G > T, p.(Glu81*) and NM_006371.5, c.923-2_932del. We suggest that ventriculosubgaleal shunt placement is an effective and safe treatment for hydrocephalus in patients with severe osteogenesis imperfecta.

## Linked entities

- **Genes:** CRTAP (cartilage associated protein) [NCBI Gene 10491]
- **Diseases:** osteogenesis imperfecta (MONDO:0019019), hydrocephalus (MONDO:0001150)

## Full-text entities

- **Genes:** CRTAP (cartilage associated protein) [NCBI Gene 10491] {aka CASP, LEPREL3, OI7, P3H5}
- **Diseases:** fractures (MESH:D050723), bone deformities (MESH:D001847), Osteogenesis imperfecta (MESH:D010013), hydrocephalus (MESH:D006849)
- **Species:** Homo sapiens (human, species) [taxon 9606]
- **Mutations:** p.(Glu81*), c.241 G > T, c.923-2_932del

## Figures

2 figures with captions in the complete paper: https://tomesphere.com/paper/PMC10978965/full.md

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Source: https://tomesphere.com/paper/PMC10978965