rs199715125

Positions:

chr6-158999748-C-T

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP4_StrongBS1_Supporting

The NM_031924.8(RSPH3):c.-198G>A variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000145 in 1,611,082 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.00012 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00015 ( 1 hom. )

Consequence

RSPH3
NM_031924.8 5_prime_UTR

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: -4.13

Variant links:

Genes affected

RSPH3 (HGNC:21054): (radial spoke head 3) The protein encoded by this gene acts as a protein kinase A anchoring protein. Mutations in this gene cause primary ciliary dyskinesia; a disorder characterized by defects of the axoneme in motile cilia and sperm flagella. The homolog of this gene was first identified in the blue-green algae Chlamydomonas as encoding a radial spoke protein that formed a structural component of motile cilia and flagella. Alternate splicing results in multiple transcript variants encoding distinct isoforms. [provided by RefSeq, Dec 2016]

RSPH3 links:

TAGAP-AS1 (HGNC:55239): (TAGAP antisense RNA 1)

TAGAP-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.02807337).

BS1

Variant frequency is greater than expected in population mid. gnomad4_exome allele frequency = 0.000147 (215/1458910) while in subpopulation MID AF= 0.00139 (8/5750). AF 95% confidence interval is 0.000692. There are 1 homozygotes in gnomad4_exome. There are 113 alleles in male gnomad4_exome subpopulation. Median coverage is 32. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RSPH3	NM_031924.8 linkuse as main transcript	c.-198G>A		5_prime_UTR_variant	1/8	ENST00000367069.7

Ensembl

Gene	Transcript	HGVSc	Effect	#exon/exons	TSL	MANE	Appris
RSPH3	ENST00000367069.7 linkuse as main transcript	c.-198G>A	5_prime_UTR_variant	1/8	1	NM_031924.8	P1
RSPH3	ENST00000449822.5 linkuse as main transcript	c.-198G>A	5_prime_UTR_variant	1/6	2
TAGAP-AS1	ENST00000607391.5 linkuse as main transcript	n.236+9176C>T	intron_variant, non_coding_transcript_variant		3

Frequencies

GnomAD3 genomes

AF:

0.000125

AC:

AN:

152172

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000458

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:

0.000162

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000136

AC:

AN:

249198

Hom.:

AF XY:

0.000126

AC XY:

AN XY:

134634

show subpopulations

Gnomad AFR exome

AF:

0.000123

Gnomad AMR exome

AF:

0.000378

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:

0.000151

Gnomad OTH exome

AF:

0.000330

GnomAD4 exome

AF:

0.000147

AC:

215

AN:

1458910

Hom.:

Cov.:

AF XY:

0.000156

AC XY:

113

AN XY:

725288

show subpopulations

Gnomad4 AFR exome

AF:

0.0000598

Gnomad4 AMR exome

AF:

0.000516

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:

0.000141

Gnomad4 OTH exome

AF:

0.000415

GnomAD4 genome

AF:

0.000125

AC:

AN:

152172

Hom.:

Cov.:

AF XY:

0.000135

AC XY:

AN XY:

74342

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.000458

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000162

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000133

Hom.:

Bravo

AF:

0.000159

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.000107

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.000237

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jul 19, 2022

The c.229G>A (p.G77R) alteration is located in exon 1 (coding exon 1) of the RSPH3 gene. This alteration results from a G to A substitution at nucleotide position 229, causing the glycine (G) at amino acid position 77 to be replaced by an arginine (R). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Primary ciliary dyskinesia 32

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Jul 20, 2022

This sequence change replaces glycine, which is neutral and non-polar, with arginine, which is basic and polar, at codon 77 of the RSPH3 protein (p.Gly77Arg). This variant is present in population databases (rs199715125, gnomAD 0.04%). This variant has not been reported in the literature in individuals affected with RSPH3-related conditions. ClinVar contains an entry for this variant (Variation ID: 475829). Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The arginine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site. 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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.097

BayesDel_addAF

Benign

-0.50

BayesDel_noAF

Benign

-0.64

CADD

Benign

0.022

DANN

Benign

0.80

DEOGEN2

Benign

0.00072

Eigen

Benign

-1.7

Eigen_PC

Benign

-1.8

FATHMM_MKL

Benign

0.0055

LIST_S2

Benign

0.46

M_CAP

Benign

0.0019

MetaRNN

Benign

0.028

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.55

MutationTaster

Benign

1.0

N;N;N;N

PrimateAI

Benign

0.29

PROVEAN

Benign

-0.29

REVEL

Benign

0.020

Sift

Benign

0.83

Sift4G

Benign

0.84

Polyphen

0.0

Vest4

0.079

MutPred

0.15

Gain of methylation at G77 (P = 0.0328);

MVP

0.040

MPC

0.35

ClinPred

0.030

GERP RS

-9.3

Varity_R

0.041

gMVP

0.018

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