rs777270916

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_021942.6(TRAPPC11):c.2696T>C(p.Phe899Ser) variant causes a missense, splice region change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000112 in 1,613,750 control chromosomes in the GnomAD database, with no homozygous occurrence. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000096 ( 0 hom. )

Consequence

TRAPPC11
NM_021942.6 missense, splice_region

Scores

Splicing: ADA: 0.7728

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.80

Variant links:

Genes affected

TRAPPC11 (HGNC:25751): (trafficking protein particle complex subunit 11) The protein encoded by this gene is a subunit of the TRAPP (transport protein particle) tethering complex, which functions in intracellular vesicle trafficking. This subunit is involved in early stage endoplasmic reticulum-to-Golgi vesicle transport. Alternative splicing of this gene results in multiple transcript variants. [provided by RefSeq, Jan 2013]

TRAPPC11 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TRAPPC11	NM_021942.6 linkuse as main transcript	c.2696T>C	p.Phe899Ser	missense_variant, splice_region_variant	25/30	ENST00000334690.11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TRAPPC11	ENST00000334690.11 linkuse as main transcript	c.2696T>C	p.Phe899Ser	missense_variant, splice_region_variant	25/30	1	NM_021942.6	P1	Q7Z392-1
TRAPPC11	ENST00000357207.8 linkuse as main transcript	c.2696T>C	p.Phe899Ser	missense_variant, splice_region_variant	25/31	1			Q7Z392-3
TRAPPC11	ENST00000512476.1 linkuse as main transcript	c.1514T>C	p.Phe505Ser	missense_variant, splice_region_variant	14/19	1
TRAPPC11	ENST00000505676.5 linkuse as main transcript	c.*810T>C		splice_region_variant, 3_prime_UTR_variant, NMD_transcript_variant	13/19	1

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152178

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

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:

0.0000319

AC:

AN:

250946

Hom.:

AF XY:

0.0000221

AC XY:

AN XY:

135658

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000204

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000958

AC:

AN:

1461572

Hom.:

Cov.:

AF XY:

0.00000550

AC XY:

AN XY:

727096

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000224

Gnomad4 ASJ exome

AF:

0.0000383

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000180

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152178

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74366

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.000196

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:

0.0000555

Hom.:

Bravo

AF:

0.0000151

ExAC

AF:

0.0000247

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Autosomal recessive limb-girdle muscular dystrophy type R18

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Jul 11, 2022

This sequence change replaces phenylalanine, which is neutral and non-polar, with serine, which is neutral and polar, at codon 899 of the TRAPPC11 protein (p.Phe899Ser). This variant is present in population databases (rs777270916, gnomAD 0.02%). This variant has not been reported in the literature in individuals affected with TRAPPC11-related conditions. ClinVar contains an entry for this variant (Variation ID: 474356). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). 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

Pathogenic

0.86

BayesDel_addAF

Pathogenic

0.22

BayesDel_noAF

Pathogenic

0.36

Cadd

Pathogenic

Dann

Uncertain

1.0

DEOGEN2

Benign

0.23

T;.;T

Eigen

Uncertain

0.57

Eigen_PC

Uncertain

0.60

FATHMM_MKL

Pathogenic

1.0

LIST_S2

Uncertain

0.90

D;D;D

M_CAP

Benign

0.013

MetaRNN

Uncertain

0.56

D;D;D

MetaSVM

Benign

-0.65

MutationAssessor

Uncertain

2.1

M;M;.

MutationTaster

Benign

1.0

D;D;D

PrimateAI

Uncertain

0.68

PROVEAN

Uncertain

-3.9

D;D;D

REVEL

Uncertain

0.31

Sift

Uncertain

0.0020

D;D;D

Sift4G

Uncertain

0.0090

D;D;D

Polyphen

0.88

P;P;D

Vest4

0.76

MVP

0.35

MPC

0.76

ClinPred

0.69

GERP RS

5.5

Varity_R

0.61

gMVP

0.64

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.77

dbscSNV1_RF

Benign

0.58

SpliceAI score (max)

0.040

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