NM_001182.5:c.201G>A

Variant names:

• chr5-126593396-C-T
• rs747643987
• NM_001182.5:c.201G>A

Variant summary

Our verdict is Benign. The variant received -7 ACMG points: 0P and 7B. BP4_Strong BP6_Moderate BP7

The NM_001182.5(ALDH7A1):​c.201G>A​(p.Thr67Thr) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000013 in 1,461,636 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 Likely benign (★). Synonymous variant affecting the same amino acid position (i.e. T67T) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.000013 (0 hom.)
• Consequence: ALDH7A1 NM_001182.5 synonymous
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -1.69
• Publications: 0 publications found

Genes affected

ALDH7A1 (HGNC:877): (aldehyde dehydrogenase 7 family member A1) The protein encoded by this gene is a member of subfamily 7 in the aldehyde dehydrogenase gene family. These enzymes are thought to play a major role in the detoxification of aldehydes generated by alcohol metabolism and lipid peroxidation. This particular member has homology to a previously described protein from the green garden pea, the 26g pea turgor protein. It is also involved in lysine catabolism that is known to occur in the mitochondrial matrix. Recent reports show that this protein is found both in the cytosol and the mitochondria, and the two forms likely arise from the use of alternative translation initiation sites. An additional variant encoding a different isoform has also been found for this gene. Mutations in this gene are associated with pyridoxine-dependent epilepsy. Several related pseudogenes have also been identified. [provided by RefSeq, Jan 2011]

ALDH7A1 Gene-Disease associations (from GenCC):

• pyridoxine-dependent epilepsy

  Inheritance: AR Classification: DEFINITIVE, SUPPORTIVE Submitted by: Illumina, Orphanet, ClinGen
• pyridoxine-dependent epilepsy caused by ALDH7A1 mutant

  Inheritance: AR, AD Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics

ACMG classification

Our verdict: Benign. The variant received -7 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.59).
• BP6: Variant 5-126593396-C-T is Benign according to our data. Variant chr5-126593396-C-T is described in ClinVar as Likely_benign. ClinVar VariationId is 1587085.Status of the report is criteria_provided_single_submitter, 1 stars.
• BP7: Synonymous conserved (PhyloP=-1.69 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001182.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ALDH7A1	NM_001182.5	MANE Select	c.201G>A	p.Thr67Thr	synonymous	Exon 2 of 18	NP_001173.2
	ALDH7A1	NM_001201377.2		c.117G>A	p.Thr39Thr	synonymous	Exon 2 of 18	NP_001188306.1
	ALDH7A1	NM_001202404.2		c.201G>A	p.Thr67Thr	synonymous	Exon 2 of 16	NP_001189333.2

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ALDH7A1	ENST00000409134.8	TSL:1 MANE Select	c.201G>A	p.Thr67Thr	synonymous	Exon 2 of 18	ENSP00000387123.3
	ALDH7A1	ENST00000636879.1	TSL:5	c.201G>A	p.Thr67Thr	synonymous	Exon 2 of 19	ENSP00000490811.1
	ALDH7A1	ENST00000635851.1	TSL:5	c.198G>A	p.Thr66Thr	synonymous	Exon 2 of 18	ENSP00000490819.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.0000119 AC: 3 AN: 251358 AF XY: 0.00000736

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: 0.0000264

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000130 AC: 19 AN: 1461636 Hom.: 0 Cov.: 34 AF XY: 0.0000138 AC XY: 10 AN XY: 727122

African (AFR) AF: 0.0000597 AC: 2 AN: 33474

American (AMR) AF: 0.00 AC: 0 AN: 44722

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39698

South Asian (SAS) AF: 0.0000116 AC: 1 AN: 86228

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53390

Middle Eastern (MID) AF: 0.000178 AC: 1 AN: 5630

European-Non Finnish (NFE) AF: 0.0000108 AC: 12 AN: 1111986

Other (OTH) AF: 0.0000497 AC: 3 AN: 60372

GnomAD4 genome Cov.: 32

Alfa AF: 0.0000147 Hom.: 0

Bravo AF: 0.00000756

EpiCase AF: 0.00

EpiControl AF: 0.0000593

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Pyridoxine-dependent epilepsy Benign:1

Nov 04, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.59
CADD	Benign	5.0
DANN	Benign	0.90
PhyloP100		-1.7

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: rs747643987; hg19: chr5-125929088;