2-42048318-A-G

Position:

• chr2-42048318-A-G

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_138370.3(PKDCC):​c.119A>G​(p.Glu40Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000954 in 1,048,546 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: 9.5e-7 (0 hom.)
• Consequence: PKDCC NM_138370.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.744

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 Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.0556888).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PKDCC	NM_138370.3	c.119A>G	p.Glu40Gly	missense_variant	1/7	ENST00000294964.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PKDCC	ENST00000294964.6	c.119A>G	p.Glu40Gly	missense_variant	1/7	1	NM_138370.3	P1
PKDCC	ENST00000401498.6	c.119A>G	p.Glu40Gly	missense_variant, NMD_transcript_variant	1/8	5

Frequencies

GnomAD3 genomes Cov.: 30

GnomAD4 exome AF: 9.54e-7 AC: 1 AN: 1048546 Hom.: 0 Cov.: 31 AF XY: 0.00000199 AC XY: 1 AN XY: 502382

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: 0.00000111

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 30

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

Apr 07, 2023

The c.119A>G (p.E40G) alteration is located in exon 1 (coding exon 1) of the PKDCC gene. This alteration results from a A to G substitution at nucleotide position 119, causing the glutamic acid (E) at amino acid position 40 to be replaced by a glycine (G). 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	0.052
BayesDel_addAF	Benign	-0.27	T
BayesDel_noAF	Benign	-0.62
CADD	Benign	15
DANN	Uncertain	0.99
DEOGEN2	Benign	0.048	T
Eigen	Benign	-1.1
Eigen_PC	Benign	-1.1
FATHMM_MKL	Benign	0.011	N
LIST_S2	Benign	0.34	T
M_CAP	Benign	0.012	T
MetaRNN	Benign	0.056	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.0	N
MutationTaster	Benign	1.0	N
PrimateAI	Pathogenic	0.84	D
PROVEAN	Benign	-0.83	N
REVEL	Benign	0.026
Sift	Benign	0.22	T
Sift4G	Benign	0.37	T
Polyphen		0.0	B
Vest4		0.042
MutPred		0.14		Loss of solvent accessibility (P = 0.0128);
MVP		0.42
MPC		2.1
ClinPred		0.11	T
GERP RS		-0.31
Varity_R		0.052
gMVP		0.30

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr2-42275458;