6-116877840-G-A

Variant summary

Our verdict is Benign. Variant got -7 ACMG points: 2P and 9B. PM2BP4_StrongBP6BS1

The NM_173560.4(RFX6):c.268G>A(p.Ala90Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000694 in 1,614,002 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. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. A90A) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00045 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000030 ( 0 hom. )

Consequence

RFX6
NM_173560.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:1

Conservation

PhyloP100: 2.10

Variant links:

Genes affected

RFX6 (HGNC:21478): (regulatory factor X6) The nuclear protein encoded by this gene is a member of the regulatory factor X (RFX) family of transcription factors. Studies in mice suggest that this gene is specifically required for the differentiation of islet cells for the production of insulin, but not for the differentiation of pancreatic polypeptide-producing cells. It regulates the transcription factors involved in beta-cell maturation and function, thus, restricting the expression of the beta-cell differentiation and specification genes. Mutations in this gene are associated with Mitchell-Riley syndrome, which is characterized by neonatal diabetes with pancreatic hypoplasia, duodenal and jejunal atresia, and gall bladder agenesis.[provided by RefSeq, Sep 2010]

RFX6 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -7 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.025153786).

BP6

Variant 6-116877840-G-A is Benign according to our data. Variant chr6-116877840-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 917472.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Uncertain_significance=1}.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.000447 (68/152214) while in subpopulation AFR AF= 0.00152 (63/41508). AF 95% confidence interval is 0.00122. There are 0 homozygotes in gnomad4. There are 40 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RFX6	NM_173560.4 linkuse as main transcript	c.268G>A	p.Ala90Thr	missense_variant	2/19	ENST00000332958.3
RFX6	XM_011535589.2 linkuse as main transcript	c.268G>A	p.Ala90Thr	missense_variant	2/18

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RFX6	ENST00000332958.3 linkuse as main transcript	c.268G>A	p.Ala90Thr	missense_variant	2/19	1	NM_173560.4	P1
RFX6	ENST00000487683.5 linkuse as main transcript	n.332G>A		non_coding_transcript_exon_variant	2/14	5

Frequencies

GnomAD3 genomes

AF:

0.000447

AC:

AN:

152096

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00152

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.000479

GnomAD3 exomes

AF:

0.0000557

AC:

AN:

251468

Hom.:

AF XY:

0.0000589

AC XY:

AN XY:

135918

show subpopulations

Gnomad AFR exome

AF:

0.000615

Gnomad AMR exome

AF:

0.000116

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000301

AC:

AN:

1461788

Hom.:

Cov.:

AF XY:

0.0000289

AC XY:

AN XY:

727194

show subpopulations

Gnomad4 AFR exome

AF:

0.000926

Gnomad4 AMR exome

AF:

0.000157

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:

0.00

Gnomad4 OTH exome

AF:

0.0000828

GnomAD4 genome

AF:

0.000447

AC:

AN:

152214

Hom.:

Cov.:

AF XY:

0.000537

AC XY:

AN XY:

74434

show subpopulations

Gnomad4 AFR

AF:

0.00152

Gnomad4 AMR

AF:

0.000196

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.000474

Alfa

AF:

0.000322

Hom.:

Bravo

AF:

0.000416

ESP6500AA

AF:

0.00113

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000906

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Jul 14, 2023

In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

Monogenic diabetes

Benign:1

Likely benign, criteria provided, single submitter

research

Personalized Diabetes Medicine Program, University of Maryland School of Medicine

Dec 21, 2018

ACMG criteria: BP4 ( REVEL 0.028 + 9 predictors), BP1 (heterozygous variants that cause MODY with reduced penetrance are LOF per PMID: 29026101), BP1 (htz variants that cause MODY with reduced penetrance are LOF per PMID: 29026101) = likely benign -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.063

BayesDel_addAF

Benign

-0.46

BayesDel_noAF

Benign

-0.45

Cadd

Benign

Dann

Uncertain

0.99

DEOGEN2

Benign

0.089

Eigen

Benign

-0.39

Eigen_PC

Benign

-0.28

FATHMM_MKL

Uncertain

0.89

LIST_S2

Benign

0.61

M_CAP

Benign

0.013

MetaRNN

Benign

0.025

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.69

MutationTaster

Benign

0.84

PrimateAI

Benign

0.29

PROVEAN

Benign

0.080

REVEL

Benign

0.028

Sift

Benign

0.051

Sift4G

Benign

0.63

Polyphen

0.38

Vest4

0.14

MVP

0.35

MPC

0.47

ClinPred

0.067

GERP RS

3.5

Varity_R

0.10

gMVP

0.24

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over