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abstract:
Case report
15q13.2q13.3 microdeletion syndrome with congenital stationary night blindness due to compound deletion and a missense point mutation in TRPM1 gene
Justyna Pietrasik
1
,
Marlena Młynek
1
,
Agata Wiśniewska
2
,
Danuta Sielska-Rotblum
1
,
Magdalena Białecka
1
,
Marta Kotlarek-Łysakowska
3
,
Krystyna Chrzanowska
1
,
Agnieszka Madej-Pilarczyk
1
Pediatr Pol 2025; 100 (4)
Online publish date: 2025/11/19
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The 15q13.3 microdeletion syndrome is associated with a variable phenotype, often with incomplete penetrance, characterised by psychomotor developmental delay, intellectual disability, autism spectrum disorders, and nonspecific dysmorphic features. Epilepsy, congenital heart defects, and ophthalmologic abnormalities, including strabismus and/or astigmatism, may also occur. In the case of a homozygous 15q13.3 deletion involving the TRPM1 gene, symptoms of congenital stationary night blindness additionally appear. A similar clinical effect is associated with compound damage to both copies of the TRPM1 gene, in the form of a deletion involving this gene on one allele and a point mutation in TRPM1 on the other allele. We present a patient with a complex 15q13.2q13.3 deletion and a hemizygous TRPM1 variant c.332A>G, p.Tyr111Cys, in whom neurodevelopmental symptoms coexist with congenital stationary night blindness.
keywords:
15q133 microdeletion syndrome, TRPM1 gene, congenital stationary night blindness |
POLSKI
