rs1060500025

chr1-193249744-C-Gchr1-193249744-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP2

The NM_024529.5(CDC73):c.1432C>G(p.Leu478Val) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. L478M) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: CDC73 NM_024529.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.86

Genes affected

CDC73 (HGNC:16783): (cell division cycle 73) This gene encodes a tumor suppressor that is involved in transcriptional and post-transcriptional control pathways. The protein is a component of the the PAF protein complex, which associates with the RNA polymerase II subunit POLR2A and with a histone methyltransferase complex. This protein appears to facilitate the association of 3' mRNA processing factors with actively-transcribed chromatin. Mutations in this gene have been linked to hyperparathyroidism-jaw tumor syndrome, familial isolated hyperparathyroidism, and parathyroid carcinoma. [provided by RefSeq, Jul 2009]

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant where missense usually causes diseases, CDC73

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CDC73	NM_024529.5	c.1432C>G	p.Leu478Val	missense_variant	16/17	ENST00000367435.5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CDC73	ENST00000367435.5	c.1432C>G	p.Leu478Val	missense_variant	16/17	1	NM_024529.5	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 29

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Parathyroid carcinoma Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Feb 10, 2021

In summary, this variant is a novel missense change with uncertain impact on protein function. It has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). This variant is not present in population databases (ExAC no frequency) and has not been reported in the literature in individuals with a CDC73-related disease. This sequence change replaces leucine with valine at codon 478 of the CDC73 protein (p.Leu478Val). The leucine residue is moderately conserved and there is a small physicochemical difference between leucine and valine. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.20
BayesDel_addAF	Uncertain	0.15	D
BayesDel_noAF	Uncertain	-0.030
Cadd	Uncertain	24
Dann	Uncertain	1.0
DEOGEN2	Benign	0.37	T;T;T
Eigen	Uncertain	0.53
Eigen_PC	Uncertain	0.58
FATHMM_MKL	Pathogenic	0.99	D
M_CAP	Benign	0.026	D
MetaRNN	Uncertain	0.61	D;D;D
MetaSVM	Benign	-0.61	T
MutationAssessor	Benign	0.92	L;L;.
MutationTaster	Benign	1.0	D
PrimateAI	Pathogenic	0.83	D
Polyphen		0.94	P;P;.
Vest4		0.52
MutPred		0.72		Gain of methylation at K479 (P = 0.0472);Gain of methylation at K479 (P = 0.0472);.;
MVP		0.64
MPC		1.7
ClinPred		0.76	D
GERP RS		5.6
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.65
gMVP		0.72

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

Other links and lift over

dbSNP: rs1060500025; hg19: chr1-193218874;