chrX-119871979-CTGCG-C

Variant names:

• chrX-119871979-CTGCG-C
• NM_004541.4:c.70_73delGCGT

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_004541.4(NDUFA1):​c.70_73delGCGT​(p.Ala24ThrfsTer23) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 24)
• Consequence: NDUFA1 NM_004541.4 frameshift
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.28
• Publications: 0 publications found

Genes affected

NDUFA1 (HGNC:7683): (NADH:ubiquinone oxidoreductase subunit A1) The human NDUFA1 gene codes for an essential component of complex I of the respiratory chain, which transfers electrons from NADH to ubiquinone. It has been noted that the N-terminal hydrophobic domain has the potential to be folded into an alpha-helix spanning the inner mitochondrial membrane with a C-terminal hydrophilic domain interacting with globular subunits of complex I. The highly conserved two-domain structure suggests that this feature is critical for the protein function and might act as an anchor for the NADH:ubiquinone oxidoreductase complex at the inner mitochondrial membrane. However, the NDUFA1 peptide is one of about 31 components of the "hydrophobic protein" (HP) fraction of complex I which is involved in proton translocation. Thus the NDUFA1 peptide may also participate in that function. [provided by RefSeq, Jul 2008]

ENSG00000297015 (HGNC:):

RNF113A (HGNC:12974): (ring finger protein 113A) This intronless gene encodes a protein which contains a C3H1-type zinc finger domain and a C3HC4 Ring-type (Really Interesting New Gene-type) zinc finger domain. The Ring-type zinc finger domain is identified in various tumor suppressors, DNA repair genes and cytokine receptor-associated molecules, and is probably involved in mediating protein-protein interactions. [provided by RefSeq, May 2010]

RNF113A Gene-Disease associations (from GenCC):

• trichothiodystrophy 5, nonphotosensitive

  Inheritance: XL Classification: STRONG, MODERATE, LIMITED Submitted by: Ambry Genetics, G2P, Illumina, Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
• trichothiodystrophy

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004541.4. 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
	NDUFA1	NM_004541.4	MANE Select	c.70_73delGCGT	p.Ala24ThrfsTer23	frameshift	Exon 1 of 3	NP_004532.1	O15239
	RNF113A	NM_006978.3	MANE Select	c.-370_-367delCGCA		upstream_gene	N/A	NP_008909.1	O15541

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NDUFA1	ENST00000371437.5	TSL:1 MANE Select	c.70_73delGCGT	p.Ala24ThrfsTer23	frameshift	Exon 1 of 3	ENSP00000360492.4	O15239
	NDUFA1	ENST00000927464.1		c.70_73delGCGT	p.Ala24ThrfsTer23	frameshift	Exon 1 of 3	ENSP00000597523.1
	NDUFA1	ENST00000851854.1		c.70_73delGCGT	p.Ala24ThrfsTer22	frameshift	Exon 1 of 2	ENSP00000521913.1

Frequencies

GnomAD3 genomes Cov.: 24

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 24

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		1.3

Splicing

Name	Calibrated prediction	Score	Prediction
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

hg19: chrX-119005942;