2-42048411-C-T

Position:

• chr2-42048411-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_138370.3(PKDCC):​c.212C>T​(p.Ser71Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000045 in 999,656 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 30)
  • Exomes 𝑓: 0.000045 (0 hom.)
• Consequence: PKDCC NM_138370.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.860

Genes affected

PKDCC (HGNC:25123): (protein kinase domain containing, cytoplasmic) Enables non-membrane spanning protein tyrosine kinase activity. Involved in peptidyl-tyrosine phosphorylation and skeletal system development. Located in extracellular region. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.09043625).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PKDCC	NM_138370.3	c.212C>T	p.Ser71Phe	missense_variant	1/7	ENST00000294964.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PKDCC	ENST00000294964.6	c.212C>T	p.Ser71Phe	missense_variant	1/7	1	NM_138370.3	P1
PKDCC	ENST00000401498.6	c.198+14C>T		intron_variant, NMD_transcript_variant		5

Frequencies

GnomAD3 genomes Cov.: 30

GnomAD4 exome AF: 0.0000450 AC: 45 AN: 999656 Hom.: 0 Cov.: 31 AF XY: 0.0000419 AC XY: 20 AN XY: 477314

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

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: 0.0000460

Gnomad4 OTH exome AF: 0.000137

GnomAD4 genome Cov.: 30

Alfa AF: 0.0000712 Hom.: 0

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Feb 22, 2024

The c.212C>T (p.S71F) alteration is located in exon 1 (coding exon 1) of the PKDCC gene. This alteration results from a C to T substitution at nucleotide position 212, causing the serine (S) at amino acid position 71 to be replaced by a phenylalanine (F). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.31
BayesDel_addAF	Benign	-0.15	T
BayesDel_noAF	Benign	-0.46
CADD	Benign	22
DANN	Uncertain	0.98
DEOGEN2	Benign	0.033	T
Eigen	Benign	-0.51
Eigen_PC	Benign	-0.39
FATHMM_MKL	Benign	0.44	N
LIST_S2	Benign	0.57	T
M_CAP	Benign	0.010	T
MetaRNN	Benign	0.090	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.34	N
MutationTaster	Benign	1.0	N
PrimateAI	Pathogenic	0.92	D
PROVEAN	Benign	-0.17	N
REVEL	Benign	0.069
Sift	Uncertain	0.019	D
Sift4G	Uncertain	0.044	D
Polyphen		0.026	B
Vest4		0.087
MutPred		0.14		Loss of phosphorylation at S71 (P = 0.004);
MVP		0.63
MPC		2.1
ClinPred		0.31	T
GERP RS		2.2
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.9
Varity_R		0.11
gMVP		0.29

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: rs1405122434; hg19: chr2-42275551;