Genetic Variant HHIPL2:p.Arg527Gln (chr1-222532109-C-T) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_024746.4(HHIPL2):c.1580G>A(p.Arg527Gln) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.00000745 in 1,609,806 control chromosomes in the GnomAD database, with no homozygous occurrence. 1/1 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000075 ( 0 hom. )

Consequence

HHIPL2
NM_024746.4 missense, splice_region

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.73

Variant links:

Genes affected

HHIPL2 (HGNC:25842): (HHIP like 2) Predicted to enable catalytic activity. Predicted to be located in extracellular region. [provided by Alliance of Genome Resources, Apr 2022]

HHIPL2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
HHIPL2	NM_024746.4 link	c.1580G>A	p.Arg527Gln	missense_variant, splice_region_variant	Exon 6 of 9	ENST00000343410.7	NP_079022.2	Q6UWX4
HHIPL2	XM_024449814.2 link	c.1580G>A	p.Arg527Gln	missense_variant, splice_region_variant	Exon 6 of 10		XP_024305582.1
HHIPL2	XM_011509986.2 link	c.1580G>A	p.Arg527Gln	missense_variant, splice_region_variant	Exon 6 of 8		XP_011508288.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
HHIPL2	ENST00000343410.7 link	c.1580G>A	p.Arg527Gln	missense_variant, splice_region_variant	Exon 6 of 9	1	NM_024746.4	ENSP00000342118.6		Q6UWX4
HHIPL2	ENST00000468172.1 link	n.199G>A		splice_region_variant, non_coding_transcript_exon_variant	Exon 2 of 5	1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152138

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000403

AC:

AN:

248214

Hom.:

AF XY:

0.00000744

AC XY:

AN XY:

134354

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000298

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000755

AC:

AN:

1457668

Hom.:

Cov.:

AF XY:

0.00000965

AC XY:

AN XY:

725114

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000457

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000450

Gnomad4 OTH exome

AF:

0.0000332

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152138

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74322

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000655

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000189

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Aug 19, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1580G>A (p.R527Q) alteration is located in exon 6 (coding exon 6) of the HHIPL2 gene. This alteration results from a G to A substitution at nucleotide position 1580, causing the arginine (R) at amino acid position 527 to be replaced by a glutamine (Q). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.084

BayesDel_addAF

Benign

-0.23

BayesDel_noAF

Benign

-0.48

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.0078

Eigen

Uncertain

0.28

Eigen_PC

Benign

0.21

FATHMM_MKL

Uncertain

0.95

LIST_S2

Uncertain

0.90

M_CAP

Benign

0.032

MetaRNN

Uncertain

0.50

MetaSVM

Benign

-1.2

MutationAssessor

Uncertain

2.9

PrimateAI

Uncertain

0.53

PROVEAN

Uncertain

-3.6

REVEL

Benign

0.20

Sift

Uncertain

0.011

Sift4G

Uncertain

0.056

Polyphen

1.0

Vest4

0.49

MutPred

0.61

Loss of MoRF binding (P = 0.071);

MVP

0.18

MPC

0.55

ClinPred

0.96

GERP RS

2.1

Varity_R

0.43

gMVP

0.81

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.13

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over