6-116877398-G-A

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 2P and 11B. PM2 BP4_Strong BP6_Moderate BP7 BS1

The NM_173560.4(RFX6):c.123G>A(p.Pro41=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0001 in 1,607,408 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★). Synonymous variant affecting the same amino acid position (i.e. P41P) has been classified as Likely benign.

• Frequency:
  • Genomes: 𝑓 0.000085 (0 hom., cov: 32)
  • Exomes 𝑓: 0.00010 (0 hom.)
• Consequence: RFX6 NM_173560.4 synonymous
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -3.08

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]

ACMG classification

Verdict is Benign. Variant got -9 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.81).
• BP6: Variant 6-116877398-G-A is Benign according to our data. Variant chr6-116877398-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 2419433.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr6-116877398-G-A is described in Lovd as [Likely_benign].
• BP7: Synonymous conserved (PhyloP=-3.08 with no splicing effect.
• BS1: Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.0000854 (13/152186) while in subpopulation NFE AF= 0.000176 (12/68026). AF 95% confidence interval is 0.000102. There are 0 homozygotes in gnomad4. There are 6 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	c.123G>A	p.Pro41=	synonymous_variant	1/19	ENST00000332958.3
RFX6	XM_011535589.2	c.123G>A	p.Pro41=	synonymous_variant	1/18

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RFX6	ENST00000332958.3	c.123G>A	p.Pro41=	synonymous_variant	1/19	1	NM_173560.4	P1
RFX6	ENST00000487683.5	n.187G>A		non_coding_transcript_exon_variant	1/14	5

Frequencies

GnomAD3 genomes AF: 0.0000854 AC: 13 AN: 152186 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

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: 0.000176

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.0000895 AC: 21 AN: 234568 Hom.: 0 AF XY: 0.000118 AC XY: 15 AN XY: 127256

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000300

Gnomad ASJ exome AF: 0.000207

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000172

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.000102 AC: 148 AN: 1455222 Hom.: 0 Cov.: 32 AF XY: 0.000115 AC XY: 83 AN XY: 723174

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.0000227

Gnomad4 ASJ exome AF: 0.000154

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000118

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.000120

Gnomad4 OTH exome AF: 0.000117

GnomAD4 genome AF: 0.0000854 AC: 13 AN: 152186 Hom.: 0 Cov.: 32 AF XY: 0.0000807 AC XY: 6 AN XY: 74330

Gnomad4 AFR AF: 0.00

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.000288

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000176

Gnomad4 OTH AF: 0.00

Alfa AF: 0.000132 Hom.: 0

Bravo AF: 0.000113

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Invitae

Jun 03, 2023

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.81
Cadd	Benign	2.2
Dann	Benign	0.81

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

LitVar

Other links and lift over

dbSNP: rs371890425; hg19: chr6-117198561;