6-116616695-G-A

Variant names:

• chr6-116616695-G-A
• rs1775508204
• NM_001010892.3:c.72G>A

Variant summary

Our verdict is Pathogenic. The variant received 12 ACMG points: 12P and 0B. PVS1 PM2 PP5_Moderate

The NM_001010892.3(RSPH4A):​c.72G>A​(p.Trp24*) variant causes a stop gained change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: RSPH4A NM_001010892.3 stop_gained
• Clinical Significance: Pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 4.30
• Publications: 0 publications found

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: Labcorp Genetics (formerly Invitae), PanelApp Australia, Ambry Genetics, ClinGen
• primary ciliary dyskinesia

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Pathogenic. The variant received 12 ACMG points.

• PVS1: Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant located near the start codon (<100nt), not predicted to undergo nonsense mediated mRNA decay. There are 46 pathogenic variants in the truncated region.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 6-116616695-G-A is Pathogenic according to our data. Variant chr6-116616695-G-A is described in ClinVar as Pathogenic. ClinVar VariationId is 2113289.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001010892.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RSPH4A	NM_001010892.3	MANE Select	c.72G>A	p.Trp24*	stop_gained	Exon 1 of 6	NP_001010892.1	Q5TD94-1
	RSPH4A	NM_001161664.2		c.72G>A	p.Trp24*	stop_gained	Exon 1 of 5	NP_001155136.1	Q5TD94-3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RSPH4A	ENST00000229554.10	TSL:1 MANE Select	c.72G>A	p.Trp24*	stop_gained	Exon 1 of 6	ENSP00000229554.5	Q5TD94-1
	RSPH4A	ENST00000368581.8	TSL:1	c.72G>A	p.Trp24*	stop_gained	Exon 1 of 5	ENSP00000357570.4	Q5TD94-3
	RSPH4A	ENST00000368580.4	TSL:5	c.72G>A	p.Trp24*	stop_gained	Exon 1 of 5	ENSP00000357569.4	Q5TD94-2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

ClinVar

ClinVar submissions

Significance: Pathogenic

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
1	-	-	Primary ciliary dyskinesia (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.63	D
BayesDel_noAF	Pathogenic	0.50
CADD	Pathogenic	35
DANN	Uncertain	0.99
Eigen	Uncertain	0.68
Eigen_PC	Uncertain	0.45
FATHMM_MKL	Benign	0.65	D
PhyloP100		4.3
Vest4		0.13
GERP RS		4.2
PromoterAI		0.070	Neutral
Mutation Taster		=14/186	disease causing (fs/PTC)

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

Other links and lift over

dbSNP: rs1775508204; hg19: chr6-116937858;