Genetic Variant KHDRBS2:p.Arg230His (chr6-61894756-C-T) – ACMG Classification: Likely_benign (-3 pts)

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM1BP4BS2

The NM_152688.4(KHDRBS2):c.689G>A(p.Arg230His) variant causes a missense change. The variant allele was found at a frequency of 0.0000676 in 1,613,512 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00013 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000061 ( 2 hom. )

Consequence

KHDRBS2
NM_152688.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.22

Variant links:

Genes affected

KHDRBS2 (HGNC:18114): (KH RNA binding domain containing, signal transduction associated 2) Predicted to enable mRNA binding activity and poly(A) binding activity. Predicted to be involved in regulation of alternative mRNA splicing, via spliceosome. Predicted to be located in nucleoplasm. Predicted to be active in nucleus. [provided by Alliance of Genome Resources, Apr 2022]

KHDRBS2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PM1

In a modified_residue Omega-N-methylarginine (size 0) in uniprot entity KHDR2_HUMAN

BP4

Computational evidence support a benign effect (MetaRNN=0.30785102).

BS2

High Homozygotes in GnomAdExome4 at 2 gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KHDRBS2	NM_152688.4 link	c.689G>A	p.Arg230His	missense_variant	Exon 6 of 9	ENST00000281156.5	NP_689901.2	Q5VWX1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KHDRBS2	ENST00000281156.5 link	c.689G>A	p.Arg230His	missense_variant	Exon 6 of 9	1	NM_152688.4	ENSP00000281156.3		Q5VWX1
KHDRBS2	ENST00000675091.1 link	n.689G>A		non_coding_transcript_exon_variant	Exon 6 of 10			ENSP00000502245.1		A0A6Q8PGH5

Frequencies

GnomAD3 genomes

AF:

0.000132

AC:

AN:

152052

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000786

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.000415

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000735

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000140

AC:

AN:

250354

Hom.:

AF XY:

0.000185

AC XY:

AN XY:

135354

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000175

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000109

Gnomad SAS exome

AF:

0.000721

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000441

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000609

AC:

AN:

1461342

Hom.:

Cov.:

AF XY:

0.0000770

AC XY:

AN XY:

726948

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.000157

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000504

Gnomad4 SAS exome

AF:

0.000615

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000189

Gnomad4 OTH exome

AF:

0.0000828

GnomAD4 genome

AF:

0.000131

AC:

AN:

152170

Hom.:

Cov.:

AF XY:

0.000134

AC XY:

AN XY:

74398

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000785

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000194

Gnomad4 SAS

AF:

0.000415

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000735

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000853

Hom.:

Bravo

AF:

0.000204

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.000107

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

EpiCase

AF:

0.000109

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Nov 14, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.689G>A (p.R230H) alteration is located in exon 6 (coding exon 6) of the KHDRBS2 gene. This alteration results from a G to A substitution at nucleotide position 689, causing the arginine (R) at amino acid position 230 to be replaced by a histidine (H). 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

0.18

BayesDel_addAF

Benign

-0.31

BayesDel_noAF

Benign

-0.31

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.22

Eigen

Uncertain

0.33

Eigen_PC

Uncertain

0.46

FATHMM_MKL

Uncertain

0.94

LIST_S2

Benign

0.84

M_CAP

Benign

0.017

MetaRNN

Benign

0.31

MetaSVM

Benign

-0.94

MutationAssessor

Uncertain

2.1

PrimateAI

Uncertain

0.69

PROVEAN

Uncertain

-2.8

REVEL

Benign

0.14

Sift

Benign

0.047

Sift4G

Uncertain

0.046

Polyphen

0.31

Vest4

0.70

MVP

0.69

MPC

0.065

ClinPred

0.11

GERP RS

5.5

Varity_R

0.27

gMVP

0.32

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

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