Genetic Variant NM_031924.8:c.-396C>G (chr6-158999946-G-C) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_031924.8(RSPH3):c.-396C>G variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,454,992 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

RSPH3
NM_031924.8 5_prime_UTR

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -2.41

Publications

0 publications found

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:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.059462637).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RSPH3	NM_031924.8 link	c.-396C>G		5_prime_UTR_variant	Exon 1 of 8	ENST00000367069.7	NP_114130.4	Q86UC2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RSPH3	ENST00000367069.7 link	c.-396C>G		5_prime_UTR_variant	Exon 1 of 8	1	NM_031924.8	ENSP00000356036.1		A0A0C4DFU3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1454992

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

723386

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33402

American (AMR)

AF:

0.00

AC:

AN:

44176

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25560

East Asian (EAS)

AF:

0.00

AC:

AN:

39640

South Asian (SAS)

AF:

0.00

AC:

AN:

85518

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52270

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5730

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1108628

Other (OTH)

AF:

0.0000166

AC:

AN:

60068

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.450

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Primary ciliary dyskinesia 32

Uncertain:1

Jul 01, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces leucine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 11 of the RSPH3 protein (p.Leu11Val). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with RSPH3-related conditions. 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 valine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. 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

0.069

BayesDel_addAF

Benign

-0.28

BayesDel_noAF

Benign

-0.64

CADD

Benign

0.085

(source)

DANN

Benign

0.93

DEOGEN2

Benign

0.0039

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.2

FATHMM_MKL

Benign

0.021

LIST_S2

Benign

0.42

M_CAP

Benign

0.0014

MetaRNN

Benign

0.059

MetaSVM

Benign

-0.98

MutationAssessor

Benign

1.0

PhyloP100

-2.4

PrimateAI

Benign

0.36

PROVEAN

Benign

-0.45

REVEL

Benign

0.020

Sift

Pathogenic

0.0

Sift4G

Benign

0.21

Polyphen

0.063

Vest4

0.055

MutPred

0.30

Gain of catalytic residue at L11 (P = 0.0273);

MVP

0.030

MPC

0.29

ClinPred

0.22

GERP RS

-2.2

PromoterAI

0.014

Neutral

(source)

Varity_R

0.085

gMVP

0.044

Mutation Taster

=299/1

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over