Microphthalmia and congenital cataract in two patients with Stickler syndrome type II: a case report

Kirstine Bolette Boysen*, Zeynep Tümer, Daniella Bach-Holm, Anne-Marie Bisgaard, Line Kessel

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Background: Stickler syndrome (STL) is a collagenopathy caused by pathogenic variants in collagen-coding genes, mainly COL2A1 or COL11A1 associated with Stickler syndrome type 1 (STL1) or type 2 (STL2), respectively. Affected individuals manifest ocular, auditory, articular, and craniofacial findings in varying degrees. Previous literature and case reports describe high variability in clinical findings for patients with STL. With this case report, we broaden the clinical spectrum of the phenotype. Materials and methods: Case report on two members of a family (mother and son) including clinical examination and genetic testing using targeted trio whole exome sequencing (trio-WES). Results: A boy and his mother presented with microphthalmia, congenital cataract, ptosis, and moderate-to-severe sensorineural hearing loss. Trio-WES found a novel heterozygote missense variant, c.4526A>G; p(Gln1509Arg) in COL11A1 in both affected individuals. Conclusions: We report a previously undescribed phenotype associated with a COL11A1-variant in a mother and son, expanding the spectrum for phenotype-genotype correlation in STL2, presenting with microphthalmia, congenital cataract, and ptosis not normally associated with Stickler syndrome.

Original languageEnglish
JournalOphthalmic Genetics
Volume45
Issue number3
Pages (from-to)313-318
Number of pages6
ISSN1381-6810
DOIs
Publication statusPublished - 2024

Bibliographical note

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© 2024 Taylor & Francis Group, LLC.

Keywords

  • Arthroophthalmopathy
  • COL11A1
  • congenital cataract
  • microphthalmia
  • Stickler syndrome

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