Genetic Variant MKI67:p.Thr2720Ser (chr10-128103682-T-A) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_002417.5(MKI67):c.8158A>T(p.Thr2720Ser) 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 1,461,890 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 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. T2720P) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

MKI67
NM_002417.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.242

Variant links:

Genes affected

MKI67 (HGNC:7107): (marker of proliferation Ki-67) Enables protein C-terminus binding activity. Involved in regulation of chromosome segregation and regulation of mitotic nuclear division. Located in chromosome; nuclear body; and nucleolus. Colocalizes with condensed chromosome. Implicated in Crohn's disease; breast cancer; human immunodeficiency virus infectious disease; and pancreatic cancer. Biomarker of several diseases, including Barrett's esophagus; autoimmune disease of musculoskeletal system (multiple); endocrine gland cancer (multiple); gastrointestinal system cancer (multiple); and interstitial cystitis. [provided by Alliance of Genome Resources, Apr 2022]

MKI67 links:

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ACMG classification

Classification made for transcript

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=0.047102988).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MKI67	NM_002417.5 link	c.8158A>T	p.Thr2720Ser	missense_variant	Exon 13 of 15	ENST00000368654.8	NP_002408.3	P46013-1
MKI67	NM_001145966.2 link	c.7078A>T	p.Thr2360Ser	missense_variant	Exon 12 of 14		NP_001139438.1	P46013-2
MKI67	XM_011539818.3 link	c.7126A>T	p.Thr2376Ser	missense_variant	Exon 10 of 12		XP_011538120.1
MKI67	XM_006717864.4 link	c.5836A>T	p.Thr1946Ser	missense_variant	Exon 2 of 4		XP_006717927.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MKI67	ENST00000368654.8 link	c.8158A>T	p.Thr2720Ser	missense_variant	Exon 13 of 15	2	NM_002417.5	ENSP00000357643.3		P46013-1
MKI67	ENST00000368653.7 link	c.7078A>T	p.Thr2360Ser	missense_variant	Exon 12 of 14	2		ENSP00000357642.3		P46013-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461890

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727246

show subpopulations

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:

8.99e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.13

BayesDel_addAF

Benign

-0.39

BayesDel_noAF

Benign

-0.79

CADD

Benign

0.092

DANN

Benign

0.39

DEOGEN2

Benign

0.0046

.;T

Eigen

Benign

-1.3

Eigen_PC

Benign

-1.3

FATHMM_MKL

Benign

0.046

LIST_S2

Benign

0.27

T;T

M_CAP

Benign

0.0031

MetaRNN

Benign

0.047

T;T

MetaSVM

Benign

-0.93

MutationAssessor

Benign

0.17

.;N

PrimateAI

Benign

0.26

PROVEAN

Benign

-0.37

N;N

REVEL

Benign

0.029

Sift

Benign

0.71

T;T

Sift4G

Benign

0.24

T;T

Polyphen

0.23

B;B

Vest4

0.14

MutPred

0.42

.;Gain of sheet (P = 0.0125);

MVP

0.14

MPC

0.049

ClinPred

0.016

GERP RS

-0.38

Varity_R

0.020

gMVP

0.029

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over