NM_021942.6:c.219G>C

Variant names:

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_021942.6(TRAPPC11):c.219G>C(p.Glu73Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00199 in 1,613,004 control chromosomes in the GnomAD database, including 63 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Another nucleotide change resulting in the same amino acid substitution has been previously reported as Uncertain significance in ClinVar.

Frequency

Genomes: 𝑓 0.0012 ( 1 hom., cov: 32)

Exomes 𝑓: 0.0021 ( 62 hom. )

Consequence

TRAPPC11
NM_021942.6 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:4

Conservation

PhyloP100: -0.179

Publications

2 publications found

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 Gene-Disease associations (from GenCC):

autosomal recessive limb-girdle muscular dystrophy
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
autosomal recessive limb-girdle muscular dystrophy type R18
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Myriad Women’s Health, Labcorp Genetics (formerly Invitae), Laboratory for Molecular Medicine, G2P, Orphanet
intellectual disability-hyperkinetic movement-truncal ataxia syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
triple-A syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

TRAPPC11 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.008832902).

BP6

Variant 4-183666271-G-C is Benign according to our data. Variant chr4-183666271-G-C is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 261445.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population sas. GnomAd4 allele frequency = 0.00124 (189/152338) while in subpopulation SAS AF = 0.0213 (103/4830). AF 95% confidence interval is 0.018. There are 1 homozygotes in GnomAd4. There are 121 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAdExome4 at 62 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TRAPPC11	NM_021942.6 link	c.219G>C	p.Glu73Asp	missense_variant	Exon 3 of 30	ENST00000334690.11	NP_068761.4	Q7Z392-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TRAPPC11	ENST00000334690.11 link	c.219G>C	p.Glu73Asp	missense_variant	Exon 3 of 30	1	NM_021942.6	ENSP00000335371.6		Q7Z392-1

Frequencies

GnomAD3 genomes

AF:

0.00125

AC:

191

AN:

152220

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000965

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000458

Gnomad ASJ

AF:

0.00835

Gnomad EAS

AF:

0.000192

Gnomad SAS

AF:

0.0215

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00633

Gnomad NFE

AF:

0.000617

Gnomad OTH

AF:

0.000957

GnomAD2 exomes

AF:

0.00380

AC:

949

AN:

249978

AF XY:

0.00503

show subpopulations

Gnomad AFR exome

AF:

0.000308

Gnomad AMR exome

AF:

0.000322

Gnomad ASJ exome

AF:

0.00900

Gnomad EAS exome

AF:

0.0000545

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000707

Gnomad OTH exome

AF:

0.00230

GnomAD4 exome

AF:

0.00207

AC:

3019

AN:

1460666

Hom.:

Cov.:

AF XY:

0.00279

AC XY:

2025

AN XY:

726618

show subpopulations

African (AFR)

AF:

0.000179

AC:

AN:

33432

American (AMR)

AF:

0.000405

AC:

AN:

44406

Ashkenazi Jewish (ASJ)

AF:

0.00944

AC:

246

AN:

26068

East Asian (EAS)

AF:

0.0000756

AC:

AN:

39672

South Asian (SAS)

AF:

0.0237

AC:

2039

AN:

86026

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53402

Middle Eastern (MID)

AF:

0.00590

AC:

AN:

5758

European-Non Finnish (NFE)

AF:

0.000457

AC:

508

AN:

1111558

Other (OTH)

AF:

0.00273

AC:

165

AN:

60344

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.488

Heterozygous variant carriers

133

266

400

533

666

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

120

160

200

<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:

0.00124

AC:

189

AN:

152338

Hom.:

Cov.:

AF XY:

0.00162

AC XY:

121

AN XY:

74492

show subpopulations

African (AFR)

AF:

0.0000962

AC:

AN:

41568

American (AMR)

AF:

0.000458

AC:

AN:

15298

Ashkenazi Jewish (ASJ)

AF:

0.00835

AC:

AN:

3472

East Asian (EAS)

AF:

0.000193

AC:

AN:

5192

South Asian (SAS)

AF:

0.0213

AC:

103

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00340

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000617

AC:

AN:

68040

Other (OTH)

AF:

0.000947

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.508

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

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:

0.00119

Hom.:

Bravo

AF:

0.000808

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.000681

AC:

ESP6500EA

AF:

0.000581

AC:

ExAC

AF:

0.00422

AC:

512

Asia WGS

AF:

0.00606

AC:

AN:

3478

EpiCase

AF:

0.00104

EpiControl

AF:

0.000890

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:2

Dec 02, 2024

GeneDx

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

See Variant Classification Assertion Criteria. -

Breakthrough Genomics, Breakthrough Genomics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:not provided

- -

not specified

Benign:1

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Autosomal recessive limb-girdle muscular dystrophy type R18

Benign:1

Jan 23, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.53

BayesDel_addAF

Benign

-0.27

BayesDel_noAF

Benign

-0.14

CADD

Benign

2.8

(source)

DANN

Uncertain

0.98

DEOGEN2

Benign

0.056

T;.

Eigen

Benign

-0.86

Eigen_PC

Benign

-0.95

FATHMM_MKL

Benign

0.67

LIST_S2

Uncertain

0.94

D;D

MetaRNN

Benign

0.0088

T;T

MetaSVM

Benign

-0.88

MutationAssessor

Benign

0.72

N;N

PhyloP100

-0.18

PrimateAI

Pathogenic

0.90

PROVEAN

Benign

-1.6

N;N

REVEL

Uncertain

0.44

Sift

Benign

0.33

T;T

Sift4G

Benign

0.31

T;T

Polyphen

0.82

P;P

Vest4

0.83

MutPred

0.51

Gain of glycosylation at T70 (P = 0.0177);Gain of glycosylation at T70 (P = 0.0177);

MVP

0.30

MPC

0.24

ClinPred

0.036

GERP RS

-8.2

Varity_R

0.13

gMVP

0.68

Mutation Taster

=76/24

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over