rs1131692150

Variant names:

• chr11-18311914-C-T
• rs1131692150
• ENST00000396253.7:c.-124G>A

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2 PP3 PP5

The NM_181507.2(HPS5):​c.219G>A​(p.Arg73Arg) variant causes a splice region, synonymous change. The variant allele was found at a frequency of 0.000000695 in 1,439,066 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Pathogenic (no stars).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: HPS5 NM_181507.2 splice_region, synonymous
• Scores: Splicing: ADA: 0.9994
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 5.51
• Publications: 1 publications found

Genes affected

HPS5 (HGNC:17022): (HPS5 biogenesis of lysosomal organelles complex 2 subunit 2) This gene encodes a protein that may play a role in organelle biogenesis associated with melanosomes, platelet dense granules, and lysosomes. This protein interacts with Hermansky-Pudlak syndrome 6 protein and may interact with the cytoplasmic domain of integrin, alpha-3. Mutations in this gene are associated with Hermansky-Pudlak syndrome type 5. Multiple transcript variants encoding two distinct isoforms have been identified for this gene. [provided by RefSeq, Jul 2008]

HPS5 Gene-Disease associations (from GenCC):

• Hermansky-Pudlak syndrome 5

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, ClinGen, Labcorp Genetics (formerly Invitae)
• Hermansky-Pudlak syndrome without pulmonary fibrosis

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: Splicing predictors support a deleterious effect. Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF, max_spliceai. No scorers claiming Uncertain. No scorers claiming Benign.
• PP5: Variant 11-18311914-C-T is Pathogenic according to our data. Variant chr11-18311914-C-T is described in ClinVar as Pathogenic. ClinVar VariationId is 427881.Status of the report is no_assertion_criteria_provided, 0 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_181507.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	HPS5	NM_181507.2	MANE Select	c.219G>A	p.Arg73Arg	splice_region synonymous	Exon 3 of 23	NP_852608.1	Q9UPZ3-1
	HPS5	NM_001440920.1		c.-124G>A		splice_region	Exon 2 of 23	NP_001427849.1
	HPS5	NM_001440921.1		c.-124G>A		splice_region	Exon 2 of 23	NP_001427850.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	HPS5	ENST00000396253.7	TSL:1	c.-124G>A		splice_region	Exon 2 of 22	ENSP00000379552.3	Q9UPZ3-2
	HPS5	ENST00000438420.6	TSL:1	c.-124G>A		splice_region	Exon 2 of 22	ENSP00000399590.2	Q9UPZ3-2
	HPS5	ENST00000349215.8	TSL:1 MANE Select	c.219G>A	p.Arg73Arg	splice_region synonymous	Exon 3 of 23	ENSP00000265967.5	Q9UPZ3-1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.95e-7 AC: 1 AN: 1439066 Hom.: 0 Cov.: 27 AF XY: 0.00000139 AC XY: 1 AN XY: 717422

African (AFR) AF: 0.00 AC: 0 AN: 32978

American (AMR) AF: 0.00 AC: 0 AN: 44708

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26010

East Asian (EAS) AF: 0.00 AC: 0 AN: 39576

South Asian (SAS) AF: 0.00 AC: 0 AN: 85768

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53400

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5738

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1091238

Other (OTH) AF: 0.0000168 AC: 1 AN: 59650

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Pathogenic

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
1	-	-	Hermansky-Pudlak syndrome 5 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.15
CADD	Benign	22
DANN	Benign	0.97
PhyloP100		5.5
Mutation Taster		=226/74	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Pathogenic	1.0
dbscSNV1_RF	Pathogenic	0.98
SpliceAI score (max)		0.66		Details are displayed if max score is > 0.2
DS_DL_spliceai		0.66		Position offset: 0

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

Other links and lift over

dbSNP: rs1131692150; hg19: chr11-18333461;