rs370338820

Variant summary

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

The NM_001010892.3(RSPH4A):c.1912G>A(p.Gly638Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000197 in 1,469,694 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000021 ( 0 hom. )

Consequence

RSPH4A
NM_001010892.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 9.56

Variant links:

Genes affected

RSPH4A (HGNC:21558): (radial spoke head component 4A) This gene encodes a protein that appears to be a component the radial spoke head, as determined by homology to similar proteins in the biflagellate alga Chlamydomonas reinhardtii and other ciliates. Radial spokes, which are regularly spaced along cilia, sperm, and flagella axonemes, consist of a thin 'stalk' and a bulbous 'head' that form a signal transduction scaffold between the central pair of microtubules and dynein. Mutations in this gene cause primary ciliary dyskinesia 1, a disease arising from dysmotility of motile cilia and sperm. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Sep 2009]

RSPH4A links:

LOC124901386 (HGNC:):

LOC124901386 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/exons	MANE	UniProt
RSPH4A	NM_001010892.3 linkuse as main transcript	c.1912G>A	p.Gly638Ser	missense_variant	5/6	ENST00000229554.10
LOC124901386	XR_007059721.1 linkuse as main transcript	n.460-558C>T		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RSPH4A	ENST00000229554.10 linkuse as main transcript	c.1912G>A	p.Gly638Ser	missense_variant	5/6	1	NM_001010892.3	P1	Q5TD94-1
RSPH4A	ENST00000368581.8 linkuse as main transcript	c.1776G>A	p.Met592Ile	missense_variant	4/5	1			Q5TD94-3
RSPH4A	ENST00000368580.4 linkuse as main transcript	c.1171G>A	p.Gly391Ser	missense_variant	4/5	5			Q5TD94-2

Frequencies

GnomAD3 genomes

AF:

0.00000659

AC:

AN:

151728

Hom.:

Cov.:

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:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000119

AC:

AN:

251412

Hom.:

AF XY:

0.00000736

AC XY:

AN XY:

135870

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000289

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:

0.0000176

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000212

AC:

AN:

1317966

Hom.:

Cov.:

AF XY:

0.0000151

AC XY:

AN XY:

663278

show subpopulations

Gnomad4 AFR exome

AF:

0.0000331

Gnomad4 AMR exome

AF:

0.0000225

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000255

Gnomad4 OTH exome

AF:

0.0000180

GnomAD4 genome

AF:

0.00000659

AC:

AN:

151728

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74048

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:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.0000151

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Primary ciliary dyskinesia

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Aug 24, 2023

In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt RSPH4A protein function. ClinVar contains an entry for this variant (Variation ID: 571103). This variant has not been reported in the literature in individuals affected with RSPH4A-related conditions. This variant is present in population databases (rs370338820, gnomAD 0.003%). This sequence change replaces glycine, which is neutral and non-polar, with serine, which is neutral and polar, at codon 638 of the RSPH4A protein (p.Gly638Ser). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.15

BayesDel_addAF

Benign

-0.035

BayesDel_noAF

Benign

-0.20

Cadd

Pathogenic

Dann

Uncertain

0.99

DEOGEN2

Benign

0.015

T;.

Eigen

Uncertain

0.30

Eigen_PC

Uncertain

0.45

FATHMM_MKL

Pathogenic

1.0

LIST_S2

Uncertain

0.91

D;D

M_CAP

Benign

0.031

MetaRNN

Uncertain

0.65

D;D

MetaSVM

Benign

-0.87

MutationTaster

Benign

0.60

D;D;D

PrimateAI

Uncertain

0.58

PROVEAN

Uncertain

-3.9

D;D

REVEL

Uncertain

0.34

Sift

Uncertain

0.011

D;D

Sift4G

Uncertain

0.016

D;D

Polyphen

1.0

D;.

Vest4

0.68

MVP

0.45

MPC

0.62

ClinPred

0.93

GERP RS

5.5

Varity_R

0.59

gMVP

0.64

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