3-52375956-T-C

Variant names:

• chr3-52375956-T-C
• rs746450942
• NM_015512.5:c.7161T>C

Variant summary

Our verdict is Benign. The variant received -11 ACMG points: 0P and 11B. BP4_Strong BP6_Moderate BP7 BS1

The NM_015512.5(DNAH1):​c.7161T>C​(p.Asp2387Asp) variant causes a splice region, synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000116 in 1,460,042 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.000012 (0 hom.)
• Consequence: DNAH1 NM_015512.5 splice_region, synonymous
• Scores: Splicing: ADA: 0.002517
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 2.18
• Publications: 0 publications found

Genes affected

DNAH1 (HGNC:2940): (dynein axonemal heavy chain 1) This gene encodes an inner dynein arm heavy chain that provides structural support between the radial spokes and the outer doublet of the sperm tail. Naturally occurring mutations in this gene are associated with primary ciliary dyskinesia and multiple morphological anomalies of the flagella that result in asthenozoospermia and male infertility. Mice with a homozygous knockout of the orthologous gene are viable but have reduced sperm motility and are infertile. [provided by RefSeq, Feb 2017]

DNAH1 Gene-Disease associations (from GenCC):

• spermatogenic failure 18

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: ClinGen, Labcorp Genetics (formerly Invitae)
• ciliary dyskinesia, primary, 37

  Inheritance: AR Classification: STRONG, MODERATE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), PanelApp Australia, ClinGen
• primary ciliary dyskinesia

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• non-syndromic male infertility due to sperm motility disorder

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Benign. The variant received -11 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.61).
• BP6: Variant 3-52375956-T-C is Benign according to our data. Variant chr3-52375956-T-C is described in ClinVar as [Likely_benign]. Clinvar id is 544638.Status of the report is criteria_provided_single_submitter, 1 stars.
• BP7: Synonymous conserved (PhyloP=2.18 with no splicing effect.
• BS1: Variant frequency is greater than expected in population mid. GnomAdExome4 allele frequency = 0.0000116 (17/1460042) while in subpopulation MID AF = 0.00278 (16/5758). AF 95% confidence interval is 0.00174. There are 0 homozygotes in GnomAdExome4. There are 7 alleles in the male GnomAdExome4 subpopulation. Median coverage is 31. This position passed quality control check.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DNAH1	NM_015512.5	c.7161T>C	p.Asp2387Asp	splice_region_variant, synonymous_variant	Exon 46 of 78	ENST00000420323.7	NP_056327.4
DNAH1	XM_017006129.2	c.7230T>C	p.Asp2410Asp	splice_region_variant, synonymous_variant	Exon 48 of 80		XP_016861618.1
DNAH1	XM_017006130.2	c.7161T>C	p.Asp2387Asp	splice_region_variant, synonymous_variant	Exon 47 of 79		XP_016861619.1
DNAH1	XM_017006131.2	c.7230T>C	p.Asp2410Asp	splice_region_variant, synonymous_variant	Exon 48 of 79		XP_016861620.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DNAH1	ENST00000420323.7	c.7161T>C	p.Asp2387Asp	splice_region_variant, synonymous_variant	Exon 46 of 78	1	NM_015512.5	ENSP00000401514.2
DNAH1	ENST00000486752.5	n.7422T>C		splice_region_variant, non_coding_transcript_exon_variant	Exon 46 of 77	2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000404 AC: 1 AN: 247398 AF XY: 0.00000744

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 FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000889

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000116 AC: 17 AN: 1460042 Hom.: 0 Cov.: 31 AF XY: 0.00000964 AC XY: 7 AN XY: 726368

African (AFR) AF: 0.00 AC: 0 AN: 33372

American (AMR) AF: 0.00 AC: 0 AN: 44218

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26088

East Asian (EAS) AF: 0.00 AC: 0 AN: 39574

South Asian (SAS) AF: 0.00 AC: 0 AN: 85954

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53382

Middle Eastern (MID) AF: 0.00278 AC: 16 AN: 5758

European-Non Finnish (NFE) AF: 9.00e-7 AC: 1 AN: 1111376

Other (OTH) AF: 0.00 AC: 0 AN: 60320

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

EpiCase AF: 0.00

EpiControl AF: 0.0000594

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Spermatogenic failure 18;C4539798:Ciliary dyskinesia, primary, 37 Benign:1

Dec 09, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.61
CADD	Benign	11
DANN	Benign	0.65
PhyloP100		2.2

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.0025
dbscSNV1_RF	Benign	0.050
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

Other links and lift over

dbSNP: rs746450942; hg19: chr3-52409972;