chr2-26191147-T-A

Variant names:

• chr2-26191147-T-A
• rs1360388686
• NM_000182.5:c.*103A>T

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_000182.5(HADHA):​c.*103A>T variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000019 in 1,053,548 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: 0.0000019 (0 hom.)
• Consequence: HADHA NM_000182.5 3_prime_UTR
• Clinical Significance: Uncertain significance criteria provided, single submitter U:2
• Conservation: PhyloP100: -0.435
• Publications: 0 publications found

Genes affected

HADHA (HGNC:4801): (hydroxyacyl-CoA dehydrogenase trifunctional multienzyme complex subunit alpha) This gene encodes the alpha subunit of the mitochondrial trifunctional protein, which catalyzes the last three steps of mitochondrial beta-oxidation of long chain fatty acids. The mitochondrial membrane-bound heterocomplex is composed of four alpha and four beta subunits, with the alpha subunit catalyzing the 3-hydroxyacyl-CoA dehydrogenase and enoyl-CoA hydratase activities. Mutations in this gene result in trifunctional protein deficiency or LCHAD deficiency. The genes of the alpha and beta subunits of the mitochondrial trifunctional protein are located adjacent to each other in the human genome in a head-to-head orientation. [provided by RefSeq, Jul 2008]

GAREM2 (HGNC:27172): (GRB2 associated regulator of MAPK1 subtype 2)

ACMG classification

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 (BayesDel_noAF=-0.82).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
HADHA	NM_000182.5	c.*103A>T		3_prime_UTR_variant	Exon 20 of 20	ENST00000380649.8	NP_000173.2
GAREM2	XM_011532567.4	c.1683+3832T>A		intron_variant	Intron 6 of 6		XP_011530869.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
HADHA	ENST00000380649.8	c.*103A>T		3_prime_UTR_variant	Exon 20 of 20	1	NM_000182.5	ENSP00000370023.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000190 AC: 2 AN: 1053548 Hom.: 0 Cov.: 14 AF XY: 0.00000372 AC XY: 2 AN XY: 538292

African (AFR) AF: 0.00 AC: 0 AN: 25800

American (AMR) AF: 0.00 AC: 0 AN: 40716

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 23250

East Asian (EAS) AF: 0.0000267 AC: 1 AN: 37398

South Asian (SAS) AF: 0.00 AC: 0 AN: 75548

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 49904

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 3356

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 750542

Other (OTH) AF: 0.0000213 AC: 1 AN: 47034

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, single submitter

Submissions by phenotype

Long chain 3-hydroxyacyl-CoA dehydrogenase deficiency Uncertain:1

Apr 27, 2017

Illumina Laboratory Services, Illumina

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases did not allow this variant to be ruled in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. -

Mitochondrial trifunctional protein deficiency Uncertain:1

Apr 27, 2017

Illumina Laboratory Services, Illumina

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases did not allow this variant to be ruled in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.82
CADD	Benign	0.85
DANN	Benign	0.70
PhyloP100		-0.43
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1

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: rs1360388686; hg19: chr2-26414016;