3-128879697-C-G

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_014049.5(ACAD9):c.6C>G(p.Ser2Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. S2G) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: ACAD9 NM_014049.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.914

Genes affected

ACAD9 (HGNC:21497): (acyl-CoA dehydrogenase family member 9) This gene encodes a member of the acyl-CoA dehydrogenase family. Members of this family of proteins localize to the mitochondria and catalyze the rate-limiting step in the beta-oxidation of fatty acyl-CoA. The encoded protein is specifically active toward palmitoyl-CoA and long-chain unsaturated substrates. Mutations in this gene cause acyl-CoA dehydrogenase family member type 9 deficiency. Alternate splicing results in multiple transcript variants.[provided by RefSeq, Mar 2010]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.36319274).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ACAD9	NM_014049.5	c.6C>G	p.Ser2Arg	missense_variant	1/18	ENST00000308982.12
ACAD9	NM_001410805.1	c.-270C>G		5_prime_UTR_variant	1/17
ACAD9	NR_033426.2	n.78C>G		non_coding_transcript_exon_variant	1/18
ACAD9	XR_427367.4	n.78C>G		non_coding_transcript_exon_variant	1/11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ACAD9	ENST00000308982.12	c.6C>G	p.Ser2Arg	missense_variant	1/18	1	NM_014049.5	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jul 19, 2022

The c.6C>G (p.S2R) alteration is located in exon 1 (coding exon 1) of the ACAD9 gene. This alteration results from a C to G substitution at nucleotide position 6, causing the serine (S) at amino acid position 2 to be replaced by an arginine (R). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.14
BayesDel_addAF	Uncertain	0.091	D
BayesDel_noAF	Benign	-0.11
Cadd	Benign	11
Dann	Uncertain	0.99
DEOGEN2	Benign	0.17	T;.
Eigen	Benign	-0.55
Eigen_PC	Benign	-0.68
FATHMM_MKL	Benign	0.089	N
LIST_S2	Benign	0.48	T;T
M_CAP	Pathogenic	0.36	D
MetaRNN	Benign	0.36	T;T
MetaSVM	Uncertain	0.20	D
MutationAssessor	Uncertain	2.4	M;.
MutationTaster	Benign	1.0	N
PrimateAI	Uncertain	0.65	T
PROVEAN	Benign	-0.29	N;N
REVEL	Uncertain	0.32
Sift	Uncertain	0.0040	D;D
Sift4G	Uncertain	0.017	D;D
Polyphen		0.66	P;.
Vest4		0.29
MutPred		0.39		Gain of MoRF binding (P = 5e-04);Gain of MoRF binding (P = 5e-04);
MVP		0.95
MPC		0.32
ClinPred		0.40	T
GERP RS		1.4
Varity_R		0.079
gMVP		0.48

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr3-128598540; COSMIC: COSV58307671;