3-129121439-G-A

Position:

• chr3-129121439-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP6

The NM_198490.3(RAB43):​c.51C>T​(p.Phe17Phe) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000548 in 1,461,010 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (no stars).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000055 (0 hom.)
• Consequence: RAB43 NM_198490.3 synonymous
• Clinical Significance: Likely benign no assertion criteria provided B:1
• Conservation: PhyloP100: 0.881

Genes affected

RAB43 (HGNC:19983): (RAB43, member RAS oncogene family) Enables GTPase activity. Involved in several processes, including Golgi organization; phagosome maturation; and retrograde transport, plasma membrane to Golgi. Located in Golgi apparatus and phagocytic vesicle. [provided by Alliance of Genome Resources, Apr 2022]

ISY1-RAB43 (HGNC:42969): (ISY1-RAB43 readthrough) This locus represents naturally occurring read-through transcription between the neighboring ISY1 (ISY1 splicing factor homolog) and RAB43 (RAB43, member RAS oncogene family) gene on chromosome 3. The read-through transcript encodes a protein that shares sequence identity with the upstream gene product, but its C-terminus is distinct due to a frameshift relative to the downstream gene. [provided by RefSeq, Mar 2011]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP6: Variant 3-129121439-G-A is Benign according to our data. Variant chr3-129121439-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 3044970.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
RAB43	NM_198490.3	c.51C>T	p.Phe17Phe	synonymous_variant	1/3	ENST00000315150.10	NP_940892.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RAB43	ENST00000315150.10	c.51C>T	p.Phe17Phe	synonymous_variant	1/3	1	NM_198490.3	ENSP00000319781.6
ISY1-RAB43	ENST00000418265.1	c.851+8649C>T		intron_variant		2		ENSP00000411822.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000548 AC: 8 AN: 1461010 Hom.: 0 Cov.: 32 AF XY: 0.00000826 AC XY: 6 AN XY: 726806

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: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000720

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: no assertion criteria provided

Submissions by phenotype

RAB43-related disorder Benign:1

Likely benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Mar 22, 2022

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.59
CADD	Benign	15
DANN	Benign	0.78

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.45		Details are displayed if max score is > 0.2
DS_AG_spliceai		0.45		Position offset: -10

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr3-128840282;