19-45163208-A-G

Position:

chr19-45163208-A-G

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001270891.2(TRAPPC6A):c.464T>C(p.Val155Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000161 in 1,613,754 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000085 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000089 ( 0 hom. )

Consequence

TRAPPC6A
NM_001270891.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.44

Variant links:

Genes affected

TRAPPC6A (HGNC:23069): (trafficking protein particle complex subunit 6A) This gene encodes a component of the trafficking protein particle complex, which tethers transport vesicles to the cis-Golgi membrane. Loss of expression of the related gene in mouse affects coat and eye pigmentation, suggesting that the encoded protein may be involved in melanosome biogenesis. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Aug 2012]

TRAPPC6A links:

MARK4 (HGNC:13538): (microtubule affinity regulating kinase 4) This gene encodes a member of the microtubule affinity-regulating kinase family. These protein kinases phosphorylate microtubule-associated proteins and regulate the transition between stable and dynamic microtubules. The encoded protein is associated with the centrosome throughout mitosis and may be involved in cell cycle control. Expression of this gene is a potential marker for cancer, and the encoded protein may also play a role in Alzheimer's disease. Pseudogenes of this gene are located on both the short and long arm of chromosome 3. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Dec 2010]

MARK4 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.05381897).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
TRAPPC6A	NM_001270891.2 linkuse as main transcript	c.464T>C	p.Val155Ala	missense_variant	6/6	ENST00000585934.1	NP_001257820.1
TRAPPC6A	NM_024108.3 linkuse as main transcript	c.506T>C	p.Val169Ala	missense_variant	6/6		NP_077013.1
TRAPPC6A	NM_001270892.2 linkuse as main transcript	c.*54T>C		3_prime_UTR_variant	5/5		NP_001257821.1
TRAPPC6A	NM_001270893.2 linkuse as main transcript	c.*54T>C		3_prime_UTR_variant	5/5		NP_001257822.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TRAPPC6A	ENST00000585934.1 linkuse as main transcript	c.464T>C	p.Val155Ala	missense_variant	6/6	1	NM_001270891.2	ENSP00000468612	P1	O75865-1

Frequencies

GnomAD3 genomes

AF:

0.0000789

AC:

AN:

152002

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000266

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000160

AC:

AN:

250094

Hom.:

AF XY:

0.0000148

AC XY:

AN XY:

135402

show subpopulations

Gnomad AFR exome

AF:

0.000185

Gnomad AMR exome

AF:

0.0000290

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000889

AC:

AN:

1461634

Hom.:

Cov.:

AF XY:

0.00000825

AC XY:

AN XY:

727130

show subpopulations

Gnomad4 AFR exome

AF:

0.000269

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.0000855

AC:

AN:

152120

Hom.:

Cov.:

AF XY:

0.000108

AC XY:

AN XY:

74396

show subpopulations

Gnomad4 AFR

AF:

0.000289

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000251

Hom.:

Bravo

AF:

0.000106

ESP6500AA

AF:

0.000681

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000330

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 07, 2024

The c.506T>C (p.V169A) alteration is located in exon 6 (coding exon 6) of the TRAPPC6A gene. This alteration results from a T to C substitution at nucleotide position 506, causing the valine (V) at amino acid position 169 to be replaced by an alanine (A). 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

0.15

BayesDel_addAF

Benign

-0.24

BayesDel_noAF

Benign

-0.35

CADD

Benign

DANN

Benign

0.74

DEOGEN2

Benign

0.20

.;T

Eigen

Benign

-0.34

Eigen_PC

Benign

-0.27

FATHMM_MKL

Uncertain

0.94

LIST_S2

Uncertain

0.88

D;D

M_CAP

Benign

0.027

MetaRNN

Benign

0.054

T;T

MetaSVM

Benign

-1.1

MutationAssessor

Uncertain

2.6

.;M

MutationTaster

Benign

1.0

D;D;N;N

PrimateAI

Benign

0.46

PROVEAN

Benign

-1.1

N;.

REVEL

Benign

0.16

Sift

Benign

0.62

T;.

Sift4G

Benign

0.76

T;T

Polyphen

0.41

B;B

Vest4

0.27

MVP

0.15

MPC

0.21

ClinPred

0.092

GERP RS

4.2

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.048

gMVP

0.31

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

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