chr4-174521984-CAG-C

Variant summary

Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1PM2PP5_Very_Strong

The ENST00000296522.11(HPGD):​c.175_176del​(p.Leu59ValfsTer8) variant causes a frameshift change. The variant allele was found at a frequency of 0.000198 in 1,614,010 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Pathogenic (β˜…β˜…). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: 𝑓 0.00014 ( 0 hom., cov: 33)
Exomes 𝑓: 0.00020 ( 0 hom. )

Consequence

HPGD
ENST00000296522.11 frameshift

Scores

Not classified

Clinical Significance

Pathogenic criteria provided, multiple submitters, no conflicts P:3

Conservation

PhyloP100: 4.50
Variant links:
Genes affected
HPGD (HGNC:5154): (15-hydroxyprostaglandin dehydrogenase) This gene encodes a member of the short-chain nonmetalloenzyme alcohol dehydrogenase protein family. The encoded enzyme is responsible for the metabolism of prostaglandins, which function in a variety of physiologic and cellular processes such as inflammation. Mutations in this gene result in primary autosomal recessive hypertrophic osteoarthropathy and cranioosteoarthropathy. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Mar 2009]

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ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 18 ACMG points.

PVS1
Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
PM2
Very rare variant in population databases, with high coverage;
PP5
Variant 4-174521984-CAG-C is Pathogenic according to our data. Variant chr4-174521984-CAG-C is described in ClinVar as [Pathogenic]. Clinvar id is 7919.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
HPGDNM_000860.6 linkuse as main transcriptc.175_176del p.Leu59ValfsTer8 frameshift_variant 2/7 ENST00000296522.11 NP_000851.2

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
HPGDENST00000296522.11 linkuse as main transcriptc.175_176del p.Leu59ValfsTer8 frameshift_variant 2/71 NM_000860.6 ENSP00000296522 P1P15428-1

Frequencies

GnomAD3 genomes
AF:
0.000138
AC:
21
AN:
152180
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.000376
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.000250
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.000155
AC:
39
AN:
251456
Hom.:
0
AF XY:
0.000162
AC XY:
22
AN XY:
135904
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.000231
Gnomad NFE exome
AF:
0.000299
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.000204
AC:
298
AN:
1461830
Hom.:
0
AF XY:
0.000208
AC XY:
151
AN XY:
727230
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.0000224
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.0000252
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.000562
Gnomad4 NFE exome
AF:
0.000229
Gnomad4 OTH exome
AF:
0.000182
GnomAD4 genome
AF:
0.000138
AC:
21
AN:
152180
Hom.:
0
Cov.:
33
AF XY:
0.000121
AC XY:
9
AN XY:
74344
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.000376
Gnomad4 NFE
AF:
0.000250
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.000174
Hom.:
0
Bravo
AF:
0.000113
EpiCase
AF:
0.000327
EpiControl
AF:
0.000119

ClinVar

Significance: Pathogenic
Submissions summary: Pathogenic:3
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

Hypertrophic osteoarthropathy, primary, autosomal recessive, 1 Pathogenic:1
Pathogenic, no assertion criteria providedliterature onlyOMIMJun 01, 2008- -
not provided Pathogenic:1
Pathogenic, criteria provided, single submitterclinical testingLabcorp Genetics (formerly Invitae), LabcorpNov 04, 2023This sequence change creates a premature translational stop signal (p.Leu59Valfs*8) in the HPGD gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in HPGD are known to be pathogenic (PMID: 18500342, 19568269, 24533558, 24816859). This variant is present in population databases (rs548208942, gnomAD 0.03%). This premature translational stop signal has been observed in individual(s) with primary hypertrophic osteoarthropathy (PMID: 18500342). ClinVar contains an entry for this variant (Variation ID: 7919). For these reasons, this variant has been classified as Pathogenic. -
Isolated congenital digital clubbing Pathogenic:1
Pathogenic, criteria provided, single submitterclinical testingCentre for Mendelian Genomics, University Medical Centre LjubljanaOct 02, 2019This variant was classified as: Pathogenic. The following ACMG criteria were applied in classifying this variant: PVS1,PS1,PM2. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.010
Details are displayed if max score is > 0.2

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs548208942; hg19: chr4-175443135; API