19-49697384-G-A

Position:

chr19-49697384-G-A

Variant summary

Our verdict is Benign. Variant got -7 ACMG points: 0P and 7B. BP4_ModerateBS1_SupportingBS2

The NM_001199753.2(CPT1C):c.200G>A(p.Ser67Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000358 in 1,613,996 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.00015 ( 0 hom., cov: 31)

Exomes 𝑓: 0.00038 ( 1 hom. )

Consequence

CPT1C
NM_001199753.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 0.839

Variant links:

Genes affected

CPT1C (HGNC:18540): (carnitine palmitoyltransferase 1C) This gene encodes a member of the carnitine/choline acetyltransferase family. The encoded protein regulates the beta-oxidation and transport of long-chain fatty acids into mitochondria, and may play a role in the regulation of feeding behavior and whole-body energy homeostasis. Alternatively spliced transcript variants encoding multiple protein isoforms have been observed for this gene. [provided by RefSeq, Dec 2010]

CPT1C links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -7 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.106076986).

BS1

Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.000151 (23/152116) while in subpopulation NFE AF= 0.000309 (21/68014). AF 95% confidence interval is 0.000207. There are 0 homozygotes in gnomad4. There are 7 alleles in male gnomad4 subpopulation. Median coverage is 31. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

BS2

High AC in GnomAd4 at 23 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CPT1C	NM_001199753.2 linkuse as main transcript	c.200G>A	p.Ser67Asn	missense_variant	4/20	ENST00000598293.6	NP_001186682.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CPT1C	ENST00000598293.6 linkuse as main transcript	c.200G>A	p.Ser67Asn	missense_variant	4/20	2	NM_001199753.2	ENSP00000473028	P1	Q8TCG5-1

Frequencies

GnomAD3 genomes

AF:

0.000151

AC:

AN:

152116

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000309

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000127

AC:

AN:

251476

Hom.:

AF XY:

0.000103

AC XY:

AN XY:

135904

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000273

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000380

AC:

555

AN:

1461880

Hom.:

Cov.:

AF XY:

0.000364

AC XY:

265

AN XY:

727238

show subpopulations

Gnomad4 AFR exome

AF:

0.0000597

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000466

Gnomad4 OTH exome

AF:

0.000563

GnomAD4 genome

AF:

0.000151

AC:

AN:

152116

Hom.:

Cov.:

AF XY:

0.0000942

AC XY:

AN XY:

74302

show subpopulations

Gnomad4 AFR

AF:

0.0000483

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000309

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000280

Hom.:

Bravo

AF:

0.000178

TwinsUK

AF:

0.00108

AC:

ALSPAC

AF:

0.000778

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000349

AC:

ExAC

AF:

0.0000824

AC:

EpiCase

AF:

0.000218

EpiControl

AF:

0.000237

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jul 06, 2021

The c.200G>A (p.S67N) alteration is located in exon 4 (coding exon 2) of the CPT1C gene. This alteration results from a G to A substitution at nucleotide position 200, causing the serine (S) at amino acid position 67 to be replaced by an asparagine (N). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Hereditary spastic paraplegia 73

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Oct 14, 2023

This sequence change replaces serine, which is neutral and polar, with asparagine, which is neutral and polar, at codon 67 of the CPT1C protein (p.Ser67Asn). This variant is present in population databases (rs151219989, gnomAD 0.03%). This variant has not been reported in the literature in individuals affected with CPT1C-related conditions. ClinVar contains an entry for this variant (Variation ID: 1035925). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant¬†is likely to be tolerated. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.47

BayesDel_addAF

Benign

-0.29

BayesDel_noAF

Benign

-0.36

CADD

Uncertain

DANN

Uncertain

0.98

DEOGEN2

Benign

0.11

T;T;T;T;.;.;T;.

Eigen

Benign

-0.36

Eigen_PC

Benign

-0.43

FATHMM_MKL

Benign

0.078

LIST_S2

Benign

0.70

.;.;T;T;T;T;T;T

M_CAP

Uncertain

0.11

MetaRNN

Benign

0.11

T;T;T;T;T;T;T;T

MetaSVM

Benign

-0.52

MutationAssessor

Benign

1.2

L;L;.;L;L;.;.;.

MutationTaster

Benign

1.0

N;N;N;N;N

PrimateAI

Benign

0.41

PROVEAN

Benign

-1.2

N;N;.;.;N;.;.;.

REVEL

Benign

0.28

Sift

Benign

0.18

T;T;.;.;T;.;.;.

Sift4G

Benign

0.25

T;T;T;T;T;D;T;D

Polyphen

0.56

P;P;.;P;P;.;.;.

Vest4

0.41

MVP

0.76

MPC

0.52

ClinPred

0.049

GERP RS

1.3

Varity_R

0.076

gMVP

0.72

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.14

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over