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SNAPIN

Synonyms
BLOC1S7, BLOS7, BORCS3, SNAPAP
External resources
Summary
The protein encoded by this gene is a coiled-coil-forming protein that associates with the SNARE (soluble N-ethylmaleimide-sensitive fusion protein attachment protein receptor) complex of proteins and the BLOC-1 (biogenesis of lysosome-related organelles) complex. Biochemical studies have identified additional binding partners. As part of the SNARE complex, it is required for vesicle docking and fusion and regulates neurotransmitter release. The BLOC-1 complex is required for the biogenesis of specialized organelles such as melanosomes and platelet dense granules. Mutations in gene products that form the BLOC-1 complex have been identified in mouse strains that are models of Hermansky-Pudlak syndrome. Alternative splicing results in multiple transcript variants.

Variant Counts

Variant classification counts, according to ACMG guideline on all identified variants among our tested samples, are listed. The variants with over 5% variant frequency in population genome databases ( gnomAD, dbSNP, etc.) are excluded.

Pathogenic
7
Likely pathogenic
0
VUS
1,025
Likely benign
5
Benign
0

Patient Phenotypes

Proportions of phenotypes among 7 patients carrying pathogenic or likely pathogenic variants on SNAPIN gene are displayed below. The following symptoms were found in patients with a variant in SNAPIN. However, patients may have been diagnosed with a different variant.

Phenotype class
Patients in 3billion (%)
Abnormality of head or neck
28.6%
Abnormality of the eye
28.6%
Abnormality of the genitourinary system
14.3%
Abnormality of the integument
14.3%
Abnormality of the nervous system
14.3%
Abnormal cellular phenotype
0%
Abnormality of blood and blood forming tissues
0%
Abnormality of limbs
0%
Abnormality of metabolism homeostasis
0%
Abnormality of prenatal development or birth
0%
Abnormality of the breast
0%
Abnormality of the cardiovascular system
0%
Abnormality of the digestive system
0%
Abnormality of the ear
0%
Abnormality of the endocrine system
0%
Abnormality of the immune system
0%
Abnormality of the musculoskeletal system
0%
Abnormality of the respiratory system
0%
Abnormality of the thoracic cavity
0%
Abnormality of the voice
0%
Constitutional symptom
0%
Growth abnormality
0%
Neoplasm
0%

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