Genetic Variant RAB19:p.Ser103Phe (chr7-140411980-C-T) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

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

The NM_001008749.3(RAB19):c.308C>T(p.Ser103Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,778 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

RAB19
NM_001008749.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.06

Variant links:

Genes affected

RAB19 (HGNC:19982): (RAB19, member RAS oncogene family) Predicted to enable GTPase activity. Predicted to be involved in autophagosome assembly and intracellular protein transport. Located in extracellular exosome. [provided by Alliance of Genome Resources, Apr 2022]

RAB19 links:

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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 rank	MANE	Protein	UniProt
RAB19	NM_001008749.3 link	c.308C>T	p.Ser103Phe	missense_variant	Exon 3 of 4	ENST00000537763.6	NP_001008749.2	A4D1S5-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RAB19	ENST00000537763.6 link	c.308C>T	p.Ser103Phe	missense_variant	Exon 3 of 4	2	NM_001008749.3	ENSP00000440167.1		A4D1S5-1
RAB19	ENST00000356407.3 link	c.308C>T	p.Ser103Phe	missense_variant	Exon 2 of 3	1		ENSP00000348778.3		A4D1S5-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000795

AC:

AN:

251466

Hom.:

AF XY:

0.00000736

AC XY:

AN XY:

135912

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000653

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461778

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727192

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 05, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.308C>T (p.S103F) alteration is located in exon 3 (coding exon 2) of the RAB19 gene. This alteration results from a C to T substitution at nucleotide position 308, causing the serine (S) at amino acid position 103 to be replaced by a phenylalanine (F). 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

0.27

BayesDel_addAF

Benign

-0.063

BayesDel_noAF

Benign

-0.15

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.50

.;T;T

Eigen

Uncertain

0.28

Eigen_PC

Uncertain

0.24

FATHMM_MKL

Uncertain

0.82

LIST_S2

Uncertain

0.86

D;T;.

M_CAP

Uncertain

0.13

MetaRNN

Uncertain

0.43

T;T;T

MetaSVM

Uncertain

0.17

MutationAssessor

Benign

1.7

.;L;L

PrimateAI

Uncertain

0.59

PROVEAN

Uncertain

-4.4

D;D;D

REVEL

Uncertain

0.42

Sift

Uncertain

0.0030

D;D;D

Sift4G

Uncertain

0.014

D;D;D

Polyphen

0.96

.;D;D

Vest4

0.59, 0.65

MutPred

0.30

Loss of disorder (P = 0.0189);Loss of disorder (P = 0.0189);Loss of disorder (P = 0.0189);

MVP

0.53

MPC

0.26

ClinPred

0.76

GERP RS

4.6

Varity_R

0.60

gMVP

0.55

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