# Biallelic CPAMD8 variants in a patient with ectopia lentis associated with extraocular systemic features reminiscent of Marfan syndrome

**Authors:** Daiju Oba, Mariko Sagara, Sayuri Oda, Miyu Fukushima, Kenta Hasumi, Hirofumi Ohashi

PMC · DOI: 10.1038/s41439-025-00329-9 · 2025-10-27

## TL;DR

A patient with eye and body features similar to Marfan syndrome is found to have genetic changes in the CPAMD8 gene.

## Contribution

This is the first report linking biallelic CPAMD8 variants to systemic features resembling Marfan syndrome.

## Key findings

- The patient had biallelic CPAMD8 variants and bilateral ectopia lentis.
- He exhibited extraocular features like slender build, scoliosis, and arachnodactyly.
- These findings suggest CPAMD8-related disorder may be a syndromic condition.

## Abstract

Here we report an 18-year-old male patient with bilateral ectopia lentis and biallelic CPAMD8 variants (NM_015692.5:c.[2801delG];[4552C>T]; NP_056507.3:p.[(Gly934GlufsTer64)];[(Gln1518Ter)]). He exhibited previously unreported extraocular features, including a slender build, scoliosis, arachnodactyly and positive thumb sign and wrist sign, which is reminiscent of Marfan syndrome. These findings may suggest that CPAMD8-related disorder is a syndromic condition associated with extraocular systemic features similar to those seen in Marfan syndrome.

## Linked entities

- **Genes:** CPAMD8 (C3 and PZP like alpha-2-macroglobulin domain containing 8) [NCBI Gene 27151]
- **Diseases:** Marfan syndrome (MONDO:0007947)

## Full-text entities

- **Genes:** CPAMD8 (C3 and PZP like alpha-2-macroglobulin domain containing 8) [NCBI Gene 27151] {aka ASGD8, K-CAP, VIP}
- **Diseases:** arachnodactyly (MESH:D054119), ectopia lentis (MESH:D004479), CPAMD8-related disorder (MESH:D019973), Marfan syndrome (MESH:D008382), scoliosis (MESH:D012600)
- **Species:** Homo sapiens (human, species) [taxon 9606]
- **Mutations:** 4552C>T, 2801delG, Gln1518Ter

## Figures

1 figure with captions in the complete paper: https://tomesphere.com/paper/PMC12559352/full.md

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Source: https://tomesphere.com/paper/PMC12559352