NM_003981.4:c.1657G>C

Variant names:

• chr15-90969539-C-G
• rs758722256
• NM_003981.4:c.1657G>C

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_003981.4(PRC1):​c.1657G>C​(p.Gly553Arg) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,476 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G553S) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: PRC1 NM_003981.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 5.59
• Publications: 0 publications found

Genes affected

PRC1 (HGNC:9341): (protein regulator of cytokinesis 1) This gene encodes a protein that is involved in cytokinesis. The protein is present at high levels during the S and G2/M phases of mitosis but its levels drop dramatically when the cell exits mitosis and enters the G1 phase. It is located in the nucleus during interphase, becomes associated with mitotic spindles in a highly dynamic manner during mitosis, and localizes to the cell mid-body during cytokinesis. This protein has been shown to be a substrate of several cyclin-dependent kinases (CDKs). It is necessary for polarizing parallel microtubules and concentrating the factors responsible for contractile ring assembly. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jun 2012]

ENSG00000284946 (HGNC:):

PRC1-AS1 (HGNC:48587): (PRC1 antisense RNA 1)

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003981.4. 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
	PRC1	NM_003981.4	MANE Select	c.1657G>C	p.Gly553Arg	missense	Exon 13 of 15	NP_003972.2	O43663-1
	PRC1	NM_199413.3		c.1657G>C	p.Gly553Arg	missense	Exon 13 of 14	NP_955445.2	O43663-4
	PRC1	NM_001267580.2		c.1534G>C	p.Gly512Arg	missense	Exon 12 of 13	NP_001254509.2	O43663-3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PRC1	ENST00000394249.8	TSL:1 MANE Select	c.1657G>C	p.Gly553Arg	missense	Exon 13 of 15	ENSP00000377793.3	O43663-1
	PRC1	ENST00000361188.9	TSL:1	c.1657G>C	p.Gly553Arg	missense	Exon 13 of 14	ENSP00000354679.5	O43663-4
	ENSG00000284946	ENST00000643536.1		n.*1620G>C		non_coding_transcript_exon	Exon 34 of 35	ENSP00000494429.1	A0A2R8YDQ0

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461476 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 727070

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 33476

American (AMR) AF: 0.00 AC: 0 AN: 44716

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26120

East Asian (EAS) AF: 0.00 AC: 0 AN: 39694

South Asian (SAS) AF: 0.0000116 AC: 1 AN: 86224

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53398

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5764

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111714

Other (OTH) AF: 0.00 AC: 0 AN: 60370

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.19
BayesDel_addAF	Benign	-0.053	T
BayesDel_noAF	Benign	-0.31
CADD	Benign	23
DANN	Uncertain	1.0
DEOGEN2	Benign	0.079	T
Eigen	Uncertain	0.48
Eigen_PC	Uncertain	0.59
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.89	D
M_CAP	Benign	0.013	T
MetaRNN	Uncertain	0.46	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Uncertain	2.5	M
PhyloP100		5.6
PrimateAI	Uncertain	0.61	T
PROVEAN	Uncertain	-2.6	D
REVEL	Benign	0.12
Sift	Uncertain	0.0040	D
Sift4G	Benign	0.074	T
Polyphen		0.24	B
Vest4		0.36
MutPred		0.47		Gain of MoRF binding (P = 0.0365)
MVP		0.51
MPC		0.12
ClinPred		0.91	D
GERP RS		6.1
Varity_R		0.18
gMVP		0.54

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: rs758722256; hg19: chr15-91512769;