22-26464569-GA-CT

Position:

• chr22-26464569-GA-CT

Variant summary

Our verdict is Benign. Variant got -7 ACMG points: 2P and 9B. PM2 BP6_Very_Strong BP7

The NM_022081.6(HPS4):​c.1060_1061delTCinsAG​(p.355) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: HPS4 NM_022081.6 synonymous
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:3
• Conservation: PhyloP100: -0.416

Genes affected

HPS4 (HGNC:15844): (HPS4 biogenesis of lysosomal organelles complex 3 subunit 2) This gene encodes a protein component of biogenesis of lysosome-related organelles complexes (BLOC). BLOC complexes are important for the formation of endosomal-lysosomal organelles such as melanosomes and platelet dense granules. Mutations in this gene result in subtype 4 of Hermansky-Pudlak syndrome, a form of albinism. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Aug 2012]

HPS4 (HGNC:):

ACMG classification

Verdict is Benign. Variant got -7 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP6: Variant 22-26464569-GA-CT is Benign according to our data. Variant chr22-26464569-GA-CT is described in ClinVar as [Likely_benign]. Clinvar id is 261532.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=-0.416 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
HPS4	NM_022081.6	c.1060_1061delTCinsAG	p.355	synonymous_variant		ENST00000398145.7	NP_071364.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
HPS4	ENST00000398145.7	c.1060_1061delTCinsAG	p.355	synonymous_variant		1	NM_022081.6	ENSP00000381213.2

Frequencies

GnomAD3 genomes Cov.: 33

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 33

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Benign:1

Benign, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

-

- -

not provided Benign:1

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 31, 2024

- -

Hermansky-Pudlak syndrome 4 Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Johns Hopkins Genomics, Johns Hopkins University

Mar 05, 2019

- -

Computational scores

Source: dbNSFP v4.3

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs386820399; hg19: chr22-26860535;