Genetic Variant TLCD3A:p.Val160Leu (chr17-740574-G-T) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_024792.3(TLCD3A):c.478G>T(p.Val160Leu) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,461,724 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another nucleotide change resulting in the same amino acid substitution has been previously reported as Uncertain significance in ClinVar.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

TLCD3A
NM_024792.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 6.63

Publications

0 publications found

Variant links:

Genes affected

TLCD3A (HGNC:29646): (TLC domain containing 3A) The protein encoded by this gene is a membrane-associated protein that promotes lung carcinogenesis. The encoded protein may be involved in amino acid transport and glutathione metabolism since it can interact with a solute carrier family member (SLC3A2) and an isoform of gamma-glutamyltranspeptidase-like 3. An alternatively spliced variant encoding a protein that lacks a 32 aa internal segment showed the opposite effect, inhibiting lung cancer cell growth. Knockdown of this gene also inhibited lung carcinogenesis and tumor cell growth. Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2015]

TLCD3A links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_024792.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
TLCD3A	NM_024792.3	MANE Select	c.478G>T	p.Val160Leu	missense	Exon 4 of 5	NP_079068.1	Q8TBR7-2
TLCD3A	NM_001318007.2		c.*12G>T		3_prime_UTR	Exon 3 of 4	NP_001304936.1
TLCD3A	NM_001318006.2		c.409-727G>T		intron	N/A	NP_001304935.1	Q8TBR7-1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
TLCD3A	ENST00000308278.13	TSL:1 MANE Select	c.478G>T	p.Val160Leu	missense	Exon 4 of 5	ENSP00000312017.7	Q8TBR7-2
TLCD3A	ENST00000301324.8	TSL:1	c.409-727G>T		intron	N/A	ENSP00000301324.8	Q8TBR7-1
TLCD3A	ENST00000577008.1	TSL:3	c.*12G>T		3_prime_UTR	Exon 2 of 3	ENSP00000460233.2	I3L374

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1461724

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727144

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33474

American (AMR)

AF:

0.00

AC:

AN:

44710

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39694

South Asian (SAS)

AF:

0.00

AC:

AN:

86228

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53414

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5752

European-Non Finnish (NFE)

AF:

0.00000180

AC:

AN:

1111928

Other (OTH)

AF:

0.00

AC:

AN:

60390

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

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

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.71

BayesDel_addAF

Pathogenic

0.34

BayesDel_noAF

Pathogenic

0.25

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.63

Eigen

Pathogenic

0.75

Eigen_PC

Pathogenic

0.75

FATHMM_MKL

Uncertain

0.97

LIST_S2

Uncertain

0.92

M_CAP

Benign

0.023

MetaRNN

Uncertain

0.61

MetaSVM

Uncertain

0.22

MutationAssessor

Uncertain

2.3

PhyloP100

6.6

PrimateAI

Uncertain

0.67

PROVEAN

Uncertain

-2.8

REVEL

Pathogenic

0.66

Sift

Uncertain

0.0050

Sift4G

Uncertain

0.0080

Polyphen

0.99

Vest4

0.45

MutPred

0.69

Loss of helix (P = 0.0626)

MVP

0.74

MPC

0.72

ClinPred

0.98

GERP RS

6.2

Varity_R

0.50

gMVP

0.70

Mutation Taster

=67/33

polymorphism

(source)

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

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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

ClinVar

Computational scores

Splicing

Publications

Other links and lift over