1-44800852-C-T

Variant names:

• chr1-44800852-C-T
• rs775512375
• NM_004073.4:c.223C>T

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_004073.4(PLK3):​c.223C>T​(p.Arg75Cys) variant causes a missense change. The variant allele was found at a frequency of 0.00000274 in 1,457,932 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 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. R75G) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 0.0000027 (0 hom.)
• Consequence: PLK3 NM_004073.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 3.80

Genes affected

PLK3 (HGNC:2154): (polo like kinase 3) The protein encoded by this gene is a member of the highly conserved polo-like kinase family of serine/threonine kinases. Members of this family are characterized by an amino-terminal kinase domain and a carboxy-terminal bipartite polo box domain that functions as a substrate-binding motif and a cellular localization signal. Polo-like kinases are important regulators of cell cycle progression. This gene has also been implicated in stress responses and double-strand break repair. In human cell lines, this protein is reported to associate with centrosomes in a microtubule-dependent manner, and during mitosis, the protein becomes localized to the mitotic apparatus. Expression of a kinase-defective mutant results in abnormal cell morphology caused by changes in microtubule dynamics and mitotic arrest followed by apoptosis. [provided by RefSeq, Sep 2015]

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.863

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PLK3	NM_004073.4	c.223C>T	p.Arg75Cys	missense_variant	Exon 2 of 15	ENST00000372201.5	NP_004064.2
PLK3	XM_047444455.1	c.223C>T	p.Arg75Cys	missense_variant	Exon 2 of 13		XP_047300411.1
PLK3	XM_047444463.1	c.223C>T	p.Arg75Cys	missense_variant	Exon 2 of 9		XP_047300419.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PLK3	ENST00000372201.5	c.223C>T	p.Arg75Cys	missense_variant	Exon 2 of 15	1	NM_004073.4	ENSP00000361275.4
PLK3	ENST00000465443.5	n.299C>T		non_coding_transcript_exon_variant	Exon 2 of 14	5

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD3 exomes AF: 0.00000829 AC: 2 AN: 241242 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 132354

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000583

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000274 AC: 4 AN: 1457932 Hom.: 0 Cov.: 32 AF XY: 0.00000276 AC XY: 2 AN XY: 725200

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.0000672

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: 9.00e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 31

Bravo AF: 0.00000378

ExAC AF: 0.00000826 AC: 1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.37
BayesDel_addAF	Uncertain	0.028	T
BayesDel_noAF	Uncertain	-0.020
CADD	Pathogenic	29
DANN	Pathogenic	1.0
DEOGEN2	Benign	0.41	T
Eigen	Uncertain	0.40
Eigen_PC	Uncertain	0.42
FATHMM_MKL	Uncertain	0.85	D
LIST_S2	Uncertain	0.94	D
M_CAP	Uncertain	0.11	D
MetaRNN	Pathogenic	0.86	D
MetaSVM	Benign	-0.47	T
MutationAssessor	Benign	0.91	L
PrimateAI	Uncertain	0.75	T
PROVEAN	Pathogenic	-6.4	D
REVEL	Uncertain	0.46
Sift	Benign	0.034	D
Sift4G	Pathogenic	0.0	D
Polyphen		0.89	P
Vest4		0.83
MutPred		0.67		Loss of MoRF binding (P = 0.0225);
MVP		0.78
MPC		1.4
ClinPred		0.91	D
GERP RS		4.7
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.39
gMVP		0.71

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: rs775512375; hg19: chr1-45266524;