Genetic Variant RSPH4A:p.Arg244Leu (chr6-116622812-G-T) – ACMG Classification: Uncertain_significance (3 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2PP3

The NM_001010892.3(RSPH4A):c.731G>T(p.Arg244Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,460,112 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R244H) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

RSPH4A
NM_001010892.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.96

Publications

0 publications found

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 Gene-Disease associations (from GenCC):

primary ciliary dyskinesia 11
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: PanelApp Australia, Ambry Genetics, Labcorp Genetics (formerly Invitae), ClinGen
primary ciliary dyskinesia
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

RSPH4A links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.767

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RSPH4A	NM_001010892.3 link	c.731G>T	p.Arg244Leu	missense_variant	Exon 2 of 6	ENST00000229554.10	NP_001010892.1	Q5TD94-1B3KTA9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
RSPH4A	ENST00000229554.10 link	c.731G>T	p.Arg244Leu	missense_variant	Exon 2 of 6	1	NM_001010892.3	ENSP00000229554.5	Q5TD94-1
RSPH4A	ENST00000368581.8 link	c.731G>T	p.Arg244Leu	missense_variant	Exon 2 of 5	1		ENSP00000357570.4	Q5TD94-3
RSPH4A	ENST00000368580.4 link	c.731G>T	p.Arg244Leu	missense_variant	Exon 2 of 5	5		ENSP00000357569.4	Q5TD94-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.85e-7

AC:

AN:

1460112

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726482

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33448

American (AMR)

AF:

0.00

AC:

AN:

44720

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26118

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39650

South Asian (SAS)

AF:

0.00

AC:

AN:

86216

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53382

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5752

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1110508

Other (OTH)

AF:

0.00

AC:

AN:

60318

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.575

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.41

BayesDel_addAF

Pathogenic

0.22

BayesDel_noAF

Uncertain

0.070

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.13

.;T;.

Eigen

Pathogenic

0.71

Eigen_PC

Uncertain

0.64

FATHMM_MKL

Uncertain

0.96

LIST_S2

Uncertain

0.97

D;D;D

M_CAP

Benign

0.022

MetaRNN

Pathogenic

0.77

D;D;D

MetaSVM

Benign

-0.85

MutationAssessor

Pathogenic

3.7

H;H;H

PhyloP100

2.0

PrimateAI

Benign

0.29

PROVEAN

Pathogenic

-6.2

D;D;D

REVEL

Uncertain

0.36

Sift

Uncertain

0.0010

D;D;D

Sift4G

Uncertain

0.0030

D;D;D

Polyphen

1.0

D;D;.

Vest4

0.59

MutPred

0.78

Loss of ubiquitination at K239 (P = 0.0811);Loss of ubiquitination at K239 (P = 0.0811);Loss of ubiquitination at K239 (P = 0.0811);

MVP

0.45

MPC

0.67

ClinPred

0.99

GERP RS

4.8

Varity_R

0.72

gMVP

0.52

Mutation Taster

=19/81

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

Details are displayed if max score is > 0.2

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over