1-155900393-TTA-GTG

Position:

• chr1-155900393-TTA-GTG

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM1 PM2

The NM_006912.6(RIT1):​c.653_655delinsCAC​(p.Val218_Thr219delinsAlaPro) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: RIT1 NM_006912.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 6.42

Genes affected

RIT1 (HGNC:10023): (Ras like without CAAX 1) This gene encodes a member of a subfamily of Ras-related GTPases. The encoded protein is involved in regulating p38 MAPK-dependent signaling cascades related to cellular stress. This protein also cooperates with nerve growth factor to promote neuronal development and regeneration. Alternate splicing results in multiple transcript variants. [provided by RefSeq, Feb 2012]

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM1: In a chain GTP-binding protein Rit1 (size 218) in uniprot entity RIT1_HUMAN there are 17 pathogenic changes around while only 3 benign (85%) in NM_006912.6
• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
RIT1	NM_006912.6	c.653_655delinsCAC	p.Val218_Thr219delinsAlaPro	missense_variant	6/6	ENST00000368323.8	NP_008843.1
RIT1	NM_001256820.2	c.545_547delinsCAC	p.Val182_Thr183delinsAlaPro	missense_variant	5/5		NP_001243749.1
RIT1	NM_001256821.2	c.704_706delinsCAC	p.Val235_Thr236delinsAlaPro	missense_variant	6/6		NP_001243750.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RIT1	ENST00000368323.8	c.653_655delinsCAC	p.Val218_Thr219delinsAlaPro	missense_variant	6/6	1	NM_006912.6	ENSP00000357306	P3

Frequencies

GnomAD3 genomes Cov.: 32

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Mar 20, 2023

Has not been previously published as pathogenic or benign to our knowledge; In-frame deletion of 2 amino acids and insertion of 2 incorrect amino acids in a non-repeat region; In silico analysis supports that this variant does not alter protein structure/function -

Computational scores

Source: dbNSFP v4.3

Splicing

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: chr1-155870184;