Genetic Variant MKRN3:p.Pro37Ala (chr15-23565891-C-G) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_005664.4(MKRN3):c.109C>G(p.Pro37Ala) 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 1,461,598 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 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. P37S) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

MKRN3
NM_005664.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.0660

Publications

0 publications found

Variant links:

Genes affected

MKRN3 (HGNC:7114): (makorin ring finger protein 3) The protein encoded by this gene contains a RING (C3HC4) zinc finger motif and several C3H zinc finger motifs. This gene is intronless and imprinted, with expression only from the paternal allele. Disruption of the imprinting at this locus may contribute to Prader-Willi syndrome. An antisense RNA of unknown function has been found overlapping this gene. [provided by RefSeq, Jul 2008]

MKRN3 Gene-Disease associations (from GenCC):

precocious puberty, central, 2
Inheritance: AD Classification: STRONG Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)

MKRN3 links:

ENSG00000260978 (HGNC:):

ENSG00000260978 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.031948745).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005664.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MKRN3	NM_005664.4	MANE Select	c.109C>G	p.Pro37Ala	missense	Exon 1 of 1	NP_005655.1	Q13064

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
MKRN3	ENST00000314520.6	TSL:6 MANE Select	c.109C>G	p.Pro37Ala	missense	Exon 1 of 1	ENSP00000313881.3	Q13064
MKRN3	ENST00000568252.1	TSL:1	c.109C>G	p.Pro37Ala	missense	Exon 1 of 2	ENSP00000456779.1	Q6NSB6
MKRN3	ENST00000676568.1		c.109C>G	p.Pro37Ala	missense	Exon 1 of 2	ENSP00000502884.1	A0A7I2YQ72

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461598

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727082

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:

26136

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:

53274

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5746

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111910

Other (OTH)

AF:

0.0000166

AC:

AN:

60374

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

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

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.049

BayesDel_addAF

Benign

-0.53

BayesDel_noAF

Benign

-0.79

CADD

Benign

6.0

(source)

DANN

Benign

0.68

DEOGEN2

Benign

0.023

Eigen

Benign

-1.5

Eigen_PC

Benign

-1.5

FATHMM_MKL

Benign

0.0070

LIST_S2

Benign

0.43

M_CAP

Benign

0.0048

MetaRNN

Benign

0.032

MetaSVM

Benign

-1.0

MutationAssessor

Benign

-0.55

PhyloP100

0.066

PrimateAI

Benign

0.48

PROVEAN

Benign

0.30

REVEL

Benign

0.0070

Sift

Benign

1.0

Sift4G

Benign

0.63

Polyphen

0.0

Vest4

0.059

MutPred

0.14

Loss of relative solvent accessibility (P = 0.0071)

MVP

0.17

MPC

0.064

ClinPred

0.073

GERP RS

-1.5

PromoterAI

0.10

Neutral

(source)

Varity_R

0.022

gMVP

0.16

Mutation Taster

=96/4

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over