Genetic Variant CPT1C:p.Thr52Thr (chr19-49697340-C-T) – ACMG Classification: Likely_benign (-6 pts)

Variant summary

Our verdict is Likely benign. The variant received -6 ACMG points: 0P and 6B. BP6_ModerateBS2

The NM_001199753.2(CPT1C):c.156C>T(p.Thr52Thr) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000427 in 1,614,098 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 Likely benign (★).

Frequency

Genomes: 𝑓 0.000066 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000040 ( 0 hom. )

Consequence

CPT1C
NM_001199753.2 synonymous

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: -5.28

Publications

0 publications found

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 Gene-Disease associations (from GenCC):

hereditary spastic paraplegia 73
Inheritance: AD Classification: STRONG, SUPPORTIVE, LIMITED Submitted by: Orphanet, Ambry Genetics, Labcorp Genetics (formerly Invitae)
hereditary spastic paraplegia
Inheritance: AD Classification: LIMITED Submitted by: ClinGen

CPT1C links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -6 ACMG points.

BP6

Variant 19-49697340-C-T is Benign according to our data. Variant chr19-49697340-C-T is described in ClinVar as Likely_benign. ClinVar VariationId is 707514.Status of the report is criteria_provided_single_submitter, 1 stars.

BS2

High AC in GnomAd4 at 10 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001199753.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
CPT1C	NM_001199753.2	MANE Select	c.156C>T	p.Thr52Thr	synonymous	Exon 4 of 20	NP_001186682.1	Q8TCG5-1
CPT1C	NM_001378482.1		c.156C>T	p.Thr52Thr	synonymous	Exon 4 of 19	NP_001365411.1
CPT1C	NM_001199752.3		c.156C>T	p.Thr52Thr	synonymous	Exon 4 of 20	NP_001186681.1	Q8TCG5-1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
CPT1C	ENST00000598293.6	TSL:2 MANE Select	c.156C>T	p.Thr52Thr	synonymous	Exon 4 of 20	ENSP00000473028.1	Q8TCG5-1
CPT1C	ENST00000323446.9	TSL:1	c.156C>T	p.Thr52Thr	synonymous	Exon 3 of 19	ENSP00000319343.4	Q8TCG5-1
CPT1C	ENST00000405931.6	TSL:1	c.156C>T	p.Thr52Thr	synonymous	Exon 4 of 20	ENSP00000384465.2	Q8TCG5-2

Frequencies

GnomAD3 genomes

AF:

0.0000657

AC:

AN:

152134

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000262

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:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000477

AC:

AN:

251424

AF XY:

0.0000589

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000578

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000704

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000404

AC:

AN:

1461846

Hom.:

Cov.:

AF XY:

0.0000303

AC XY:

AN XY:

727222

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.0000447

AC:

AN:

44720

Ashkenazi Jewish (ASJ)

AF:

0.0000765

AC:

AN:

26134

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53416

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5752

European-Non Finnish (NFE)

AF:

0.0000468

AC:

AN:

1111998

Other (OTH)

AF:

0.0000166

AC:

AN:

60388

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.457

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000657

AC:

AN:

152252

Hom.:

Cov.:

AF XY:

0.000107

AC XY:

AN XY:

74432

show subpopulations

African (AFR)

AF:

0.0000722

AC:

AN:

41574

American (AMR)

AF:

0.000262

AC:

AN:

15280

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5164

South Asian (SAS)

AF:

0.00

AC:

AN:

4818

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10608

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000441

AC:

AN:

68018

Other (OTH)

AF:

0.00

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.505

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.0000900

Hom.:

Bravo

AF:

0.0000264

EpiCase

AF:

0.00

EpiControl

AF:

0.000119

ClinVar

ClinVar submissions

Significance:Likely benign

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

Hereditary spastic paraplegia 73 (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.64

CADD

Benign

(source)

DANN

Benign

0.51

PhyloP100

-5.3

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.34

Details are displayed if max score is > 0.2

DS_AG_spliceai

0.34

Position offset: 18

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over