Genetic Variant CDK12:p.Ile619Phe (chr17-39471687-A-T) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_016507.4(CDK12):c.1855A>T(p.Ile619Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,836 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign 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. I619V) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 31)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

CDK12
NM_016507.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.83

Publications

0 publications found

Variant links:

Genes affected

CDK12 (HGNC:24224): (cyclin dependent kinase 12) Enables RNA polymerase II CTD heptapeptide repeat kinase activity and cyclin binding activity. Involved in phosphorylation of RNA polymerase II C-terminal domain; protein autophosphorylation; and regulation of MAP kinase activity. Located in nuclear speck. Part of cyclin K-CDK12 complex. [provided by Alliance of Genome Resources, Apr 2022]

CDK12 Gene-Disease associations (from GenCC):

Tourette syndrome
Inheritance: Unknown Classification: NO_KNOWN Submitted by: Labcorp Genetics (formerly Invitae)

CDK12 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.20266694).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_016507.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CDK12	NM_016507.4	MANE Select	c.1855A>T	p.Ile619Phe	missense	Exon 2 of 14	NP_057591.2
	CDK12	NM_015083.4		c.1855A>T	p.Ile619Phe	missense	Exon 2 of 14	NP_055898.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
CDK12	ENST00000447079.6	TSL:1 MANE Select	c.1855A>T	p.Ile619Phe	missense	Exon 2 of 14	ENSP00000398880.4
CDK12	ENST00000430627.6	TSL:1	c.1855A>T	p.Ile619Phe	missense	Exon 2 of 14	ENSP00000407720.2
CDK12	ENST00000584632.5	TSL:5	c.1852A>T	p.Ile618Phe	missense	Exon 2 of 13	ENSP00000464641.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461836

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727228

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86254

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111962

Other (OTH)

AF:

0.00

AC:

AN:

60394

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.15

BayesDel_addAF

Uncertain

0.027

BayesDel_noAF

Benign

-0.20

CADD

Benign

(source)

DANN

Uncertain

0.98

DEOGEN2

Benign

0.019

Eigen

Uncertain

0.32

Eigen_PC

Uncertain

0.40

FATHMM_MKL

Uncertain

0.88

LIST_S2

Uncertain

0.91

M_CAP

Benign

0.032

MetaRNN

Benign

0.20

MetaSVM

Benign

-0.63

MutationAssessor

Benign

1.8

PhyloP100

1.8

PrimateAI

Uncertain

0.60

PROVEAN

Benign

-0.95

REVEL

Benign

0.17

Sift

Uncertain

0.0010

Sift4G

Benign

0.066

Polyphen

0.90

Vest4

0.39

MutPred

0.23

Loss of methylation at K623 (P = 0.0934)

MVP

0.58

MPC

0.92

ClinPred

0.72

GERP RS

5.8

PromoterAI

-0.021

Neutral

(source)

Varity_R

0.21

gMVP

0.22

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over