chr21-42475915-C-T

Position:

chr21-42475915-C-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_080860.4(RSPH1):c.860G>A(p.Arg287His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000484 in 1,611,018 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.000027 ( 0 hom., cov: 28)

Exomes 𝑓: 0.000051 ( 0 hom. )

Consequence

RSPH1
NM_080860.4 missense

Scores

Clinical Significance

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

Conservation

PhyloP100: -0.636

Variant links:

Genes affected

RSPH1 (HGNC:12371): (radial spoke head component 1) This gene encodes a male meiotic metaphase chromosome-associated acidic protein. This gene is expressed in tissues with motile cilia or flagella, including the trachea, lungs, airway brushings, and testes. Mutations in this gene result in primary ciliary dyskinesia-24. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Sep 2014]

RSPH1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.06187412).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
RSPH1	NM_080860.4 linkuse as main transcript	c.860G>A	p.Arg287His	missense_variant	8/9	ENST00000291536.8	NP_543136.1
RSPH1	NM_001286506.2 linkuse as main transcript	c.746G>A	p.Arg249His	missense_variant	7/8		NP_001273435.1
RSPH1	XM_011529786.2 linkuse as main transcript	c.788G>A	p.Arg263His	missense_variant	7/8		XP_011528088.1
RSPH1	XM_005261208.3 linkuse as main transcript	c.653G>A	p.Arg218His	missense_variant	6/7		XP_005261265.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RSPH1	ENST00000291536.8 linkuse as main transcript	c.860G>A	p.Arg287His	missense_variant	8/9	1	NM_080860.4	ENSP00000291536	P1	Q8WYR4-1
RSPH1	ENST00000398352.3 linkuse as main transcript	c.746G>A	p.Arg249His	missense_variant	7/8	5		ENSP00000381395		Q8WYR4-2
RSPH1	ENST00000493019.1 linkuse as main transcript	n.2478G>A		non_coding_transcript_exon_variant	7/8	2

Frequencies

GnomAD3 genomes

AF:

0.0000268

AC:

AN:

149178

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:

0.0000593

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000795

AC:

AN:

251422

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135892

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

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:

0.0000506

AC:

AN:

1461840

Hom.:

Cov.:

AF XY:

0.0000399

AC XY:

AN XY:

727232

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000558

Gnomad4 OTH exome

AF:

0.0000662

GnomAD4 genome

AF:

0.0000268

AC:

AN:

149178

Hom.:

Cov.:

AF XY:

0.0000138

AC XY:

AN XY:

72534

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:

0.0000593

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000854

Hom.:

Bravo

AF:

0.0000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Primary ciliary dyskinesia

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Aug 05, 2021

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. 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 histidine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. This variant has not been reported in the literature in individuals affected with RSPH1-related conditions. This variant is not present in population databases (ExAC no frequency). This sequence change replaces arginine with histidine at codon 287 of the RSPH1 protein (p.Arg287His). The arginine residue is weakly conserved and there is a small physicochemical difference between arginine and histidine. -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

not provided

Breakthrough Genomics, Breakthrough Genomics

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.069

BayesDel_addAF

Benign

-0.28

BayesDel_noAF

Benign

-0.63

CADD

Benign

0.32

DANN

Benign

0.91

DEOGEN2

Benign

0.045

T;.

Eigen

Benign

-1.4

Eigen_PC

Benign

-1.4

FATHMM_MKL

Benign

0.011

LIST_S2

Benign

0.51

T;T

M_CAP

Benign

0.011

MetaRNN

Benign

0.062

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.76

N;.

MutationTaster

Benign

1.0

N;N

PrimateAI

Benign

0.26

PROVEAN

Benign

-0.63

N;N

REVEL

Benign

0.037

Sift

Benign

0.16

T;T

Sift4G

Benign

0.18

T;T

Polyphen

0.0

B;.

Vest4

0.23

MutPred

0.23

Loss of helix (P = 0.0626);.;

MVP

0.055

MPC

0.12

ClinPred

0.026

GERP RS

-0.60

Varity_R

0.024

gMVP

0.095

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