rs397515544

Positions:

• chr11-68759648-C-T

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_001876.4(CPT1A):​c.2156G>A​(p.Gly719Asp) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. G719G) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 31)
• Consequence: CPT1A NM_001876.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.67

Genes affected

CPT1A (HGNC:2328): (carnitine palmitoyltransferase 1A) The mitochondrial oxidation of long-chain fatty acids is initiated by the sequential action of carnitine palmitoyltransferase I (which is located in the outer membrane and is detergent-labile) and carnitine palmitoyltransferase II (which is located in the inner membrane and is detergent-stable), together with a carnitine-acylcarnitine translocase. CPT I is the key enzyme in the carnitine-dependent transport across the mitochondrial inner membrane and its deficiency results in a decreased rate of fatty acid beta-oxidation. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.984

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CPT1A	NM_001876.4	c.2156G>A	p.Gly719Asp	missense_variant	18/19	ENST00000265641.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CPT1A	ENST00000265641.10	c.2156G>A	p.Gly719Asp	missense_variant	18/19	1	NM_001876.4	P1
CPT1A	ENST00000376618.6	c.2156G>A	p.Gly719Asp	missense_variant	18/19	1
CPT1A	ENST00000540367.5	c.2156G>A	p.Gly719Asp	missense_variant	17/18	1
CPT1A	ENST00000539743.5	c.2156G>A	p.Gly719Asp	missense_variant	17/18	5		P1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.51	D
BayesDel_noAF	Pathogenic	0.50
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.96	.;.;D;D
Eigen	Pathogenic	0.81
Eigen_PC	Uncertain	0.62
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Pathogenic	0.99	.;D;.;D
M_CAP	Pathogenic	0.40	D
MetaRNN	Pathogenic	0.98	D;D;D;D
MetaSVM	Pathogenic	1.1	D
MutationAssessor	Pathogenic	4.4	H;H;H;H
MutationTaster	Benign	1.0	D;D;D;D
PrimateAI	Pathogenic	0.81	D
PROVEAN	Pathogenic	-6.0	D;D;D;D
REVEL	Pathogenic	0.88
Sift	Pathogenic	0.0	D;D;D;D
Sift4G	Pathogenic	0.0	D;D;D;D
Polyphen		1.0	D;D;D;D
Vest4		0.99
MutPred		0.84		Loss of catalytic residue at S723 (P = 0.1165);Loss of catalytic residue at S723 (P = 0.1165);Loss of catalytic residue at S723 (P = 0.1165);Loss of catalytic residue at S723 (P = 0.1165);
MVP		0.98
MPC		1.4
ClinPred		1.0	D
GERP RS		4.8
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.96
gMVP		0.93

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

LitVar

Other links and lift over

dbSNP: rs397515544; hg19: chr11-68527116; COSMIC: COSV99680475; COSMIC: COSV99680475;