rs1553122972

Variant names:

• chr1-75732870-TAGA-T
• rs1553122972
• NM_000016.6:c.238_240delAGA

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PM1 PM2 PM4_Supporting

The NM_000016.6(ACADM):​c.238_240delAGA​(p.Arg80del) variant causes a conservative inframe deletion change involving the alteration of a 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: 33)
• Consequence: ACADM NM_000016.6 conservative_inframe_deletion
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:3
• Conservation: PhyloP100: 9.13
• Publications: 0 publications found

Genes affected

ACADM (HGNC:89): (acyl-CoA dehydrogenase medium chain) This gene encodes the medium-chain specific (C4 to C12 straight chain) acyl-Coenzyme A dehydrogenase. The homotetramer enzyme catalyzes the initial step of the mitochondrial fatty acid beta-oxidation pathway. Defects in this gene cause medium-chain acyl-CoA dehydrogenase deficiency, a disease characterized by hepatic dysfunction, fasting hypoglycemia, and encephalopathy, which can result in infantile death. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

ACADM Gene-Disease associations (from GenCC):

• medium chain acyl-CoA dehydrogenase deficiency

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Labcorp Genetics (formerly Invitae), Orphanet, ClinGen

ACMG classification

Our verdict: Uncertain_significance. The variant received 5 ACMG points.

• PM1: In a hotspot region, there are 12 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 6 uncertain in NM_000016.6
• PM2: Very rare variant in population databases, with high coverage
• PM4: Nonframeshift variant in NON repetitive region in NM_000016.6. Strenght limited to Supporting due to length of the change: 1aa.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000016.6. 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
	ACADM	NM_000016.6	MANE Select	c.238_240delAGA	p.Arg80del	conservative_inframe_deletion	Exon 4 of 12	NP_000007.1	A0A0S2Z366
	ACADM	NM_001286043.2		c.238_240delAGA	p.Arg80del	conservative_inframe_deletion	Exon 4 of 13	NP_001272972.1	Q5T4U5
	ACADM	NM_001127328.3		c.250_252delAGA	p.Arg84del	conservative_inframe_deletion	Exon 4 of 12	NP_001120800.1	P11310-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ACADM	ENST00000370841.9	TSL:1 MANE Select	c.238_240delAGA	p.Arg80del	conservative_inframe_deletion	Exon 4 of 12	ENSP00000359878.5	P11310-1
	ACADM	ENST00000370834.9	TSL:1	c.238_240delAGA	p.Arg80del	conservative_inframe_deletion	Exon 4 of 13	ENSP00000359871.5	Q5T4U5
	ACADM	ENST00000420607.6	TSL:1	c.250_252delAGA	p.Arg84del	conservative_inframe_deletion	Exon 4 of 12	ENSP00000409612.2	P11310-2

Frequencies

GnomAD3 genomes Cov.: 33

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

GnomAD4 genome Cov.: 33

Alfa AF: 0.00 Hom.: 0

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	2	-	Medium-chain acyl-coenzyme A dehydrogenase deficiency (2)
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		9.1

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

dbSNP: rs1553122972;

hg19: chr1-76198555;