Genetic Variant NM_138272.3:c.185C>T (chr6-31723762-C-T) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2BP4

The NM_138272.3(MPIG6B):c.185C>T(p.Pro62Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000057 in 1,613,754 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts 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. P62Q) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000053 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000057 ( 0 hom. )

Consequence

MPIG6B
NM_138272.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.0330

Publications

4 publications found

Variant links:

Genes affected

MPIG6B (HGNC:13937): (megakaryocyte and platelet inhibitory receptor G6b) This gene is a member of the immunoglobulin (Ig) superfamily and is located in the major histocompatibility complex (MHC) class III region. The protein encoded by this gene is a glycosylated, plasma membrane-bound cell surface receptor, but soluble isoforms encoded by some transcript variants have been found in the endoplasmic reticulum and Golgi before being secreted. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

MPIG6B Gene-Disease associations (from GenCC):

thrombocytopenia, anemia, and myelofibrosis
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen

MPIG6B links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.35087278).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_138272.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
MPIG6B	NM_138272.3	MANE Select	c.185C>T	p.Pro62Leu	missense	Exon 2 of 6	NP_612116.1	O95866-1
MPIG6B	NM_025260.4		c.185C>T	p.Pro62Leu	missense	Exon 2 of 6	NP_079536.2
MPIG6B	NM_138277.3		c.185C>T	p.Pro62Leu	missense	Exon 2 of 5	NP_612121.1	O95866-7

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
MPIG6B	ENST00000649779.1	MANE Select	c.185C>T	p.Pro62Leu	missense	Exon 2 of 6	ENSP00000497720.1	O95866-1
MPIG6B	ENST00000375809.7	TSL:1	c.185C>T	p.Pro62Leu	missense	Exon 2 of 6	ENSP00000364967.3	O95866-2
MPIG6B	ENST00000375810.8	TSL:1	c.185C>T	p.Pro62Leu	missense	Exon 2 of 5	ENSP00000364968.4	O95866-7

Frequencies

GnomAD3 genomes

AF:

0.0000526

AC:

AN:

152204

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000482

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.000288

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000735

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000400

AC:

AN:

249892

AF XY:

0.0000222

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000116

Gnomad ASJ exome

AF:

0.0000996

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000265

Gnomad OTH exome

AF:

0.000328

GnomAD4 exome

AF:

0.0000575

AC:

AN:

1461550

Hom.:

Cov.:

AF XY:

0.0000523

AC XY:

AN XY:

727098

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.000134

AC:

AN:

44716

Ashkenazi Jewish (ASJ)

AF:

0.000153

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86246

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53114

Middle Eastern (MID)

AF:

0.000173

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000638

AC:

AN:

1112002

Other (OTH)

AF:

0.0000331

AC:

AN:

60390

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.467

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000526

AC:

AN:

152204

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74350

show subpopulations

African (AFR)

AF:

0.0000482

AC:

AN:

41456

American (AMR)

AF:

0.00

AC:

AN:

15280

Ashkenazi Jewish (ASJ)

AF:

0.000288

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5192

South Asian (SAS)

AF:

0.00

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10626

Middle Eastern (MID)

AF:

0.00

AC:

AN:

314

European-Non Finnish (NFE)

AF:

0.0000735

AC:

AN:

68030

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.519

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00000753

Hom.:

Bravo

AF:

0.0000604

ExAC

AF:

0.0000165

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.0000593

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.39

BayesDel_addAF

Benign

-0.18

BayesDel_noAF

Benign

-0.24

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.10

Eigen

Benign

-0.15

Eigen_PC

Benign

-0.22

FATHMM_MKL

Benign

0.22

LIST_S2

Uncertain

0.93

M_CAP

Benign

0.053

MetaRNN

Benign

0.35

MetaSVM

Benign

-0.95

MutationAssessor

Uncertain

2.2

PhyloP100

0.033

PROVEAN

Pathogenic

-8.5

REVEL

Benign

0.25

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0

Polyphen

0.99

Vest4

0.51

MutPred

0.52

Loss of disorder (P = 0.018)

MVP

0.49

MPC

0.96

ClinPred

0.46

GERP RS

3.0

PromoterAI

-0.030

Neutral

(source)

Varity_R

0.17

gMVP

0.82

Mutation Taster

=88/12

polymorphism

(source)

Splicing

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

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over