chr1-17420791-C-G

Variant names:

• chr1-17420791-C-G
• rs864622010
• NM_018715.4:c.782G>C

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_018715.4(RCC2):​c.782G>C​(p.Cys261Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (no stars).

• Frequency: Genomes: not found (cov: 32)
• Consequence: RCC2 NM_018715.4 missense
• Clinical Significance: Uncertain significance no assertion criteria provided U:1
• Conservation: PhyloP100: 7.84
• Publications: 1 publications found

Genes affected

RCC2 (HGNC:30297): (regulator of chromosome condensation 2) The protein encoded by this gene is a guanine exchange factor that is active on RalA, a small GTPase. The encoded protein and RalA are both essential for proper kinetochore-microtubule function in early mitosis. This protein has been shown to be a biomarker for colorectal cancer. [provided by RefSeq, Oct 2016]

ACMG classification

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.971

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_018715.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RCC2	NM_018715.4	MANE Select	c.782G>C	p.Cys261Ser	missense	Exon 7 of 13	NP_061185.1	A0A024RAC5
	RCC2	NM_001136204.3		c.782G>C	p.Cys261Ser	missense	Exon 6 of 12	NP_001129676.1	Q9P258

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RCC2	ENST00000375436.9	TSL:1 MANE Select	c.782G>C	p.Cys261Ser	missense	Exon 7 of 13	ENSP00000364585.4	Q9P258
	RCC2	ENST00000375433.3	TSL:1	c.782G>C	p.Cys261Ser	missense	Exon 6 of 12	ENSP00000364582.3	Q9P258
	RCC2	ENST00000927104.1		c.782G>C	p.Cys261Ser	missense	Exon 6 of 12	ENSP00000597163.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
-	1	-	Prostate cancer (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.81
BayesDel_addAF	Pathogenic	0.47	D
BayesDel_noAF	Pathogenic	0.43
CADD	Pathogenic	28
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.61	D
Eigen	Pathogenic	0.93
Eigen_PC	Pathogenic	0.89
FATHMM_MKL	Pathogenic	0.99	D
M_CAP	Pathogenic	0.52	D
MetaRNN	Pathogenic	0.97	D
MetaSVM	Pathogenic	0.86	D
MutationAssessor	Uncertain	2.9	M
PhyloP100		7.8
PrimateAI	Uncertain	0.78	T
PROVEAN	Pathogenic	-8.8	D
REVEL	Pathogenic	0.91
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
Polyphen		1.0	D
Vest4		0.93
MutPred		0.83		Gain of disorder (P = 0.0116)
MVP		0.93
MPC		2.2
ClinPred		1.0	D
GERP RS		5.5
Varity_R		0.94
gMVP		0.93
Mutation Taster		=17/83	disease causing

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

Other links and lift over

dbSNP: rs864622010; hg19: chr1-17747287; COSMIC: COSV64905384;