19-32676383-G-T

Variant names:

• chr19-32676383-G-T
• rs768692545
• NM_207391.3:c.120G>T
• RGS9BP p.Leu40Leu

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 2P and 7B. PM2 BP4_Strong BP6_Moderate BP7

The NM_207391.3(RGS9BP):​c.120G>T​(p.Leu40Leu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000686 in 1,458,064 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. L40L) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 34)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: RGS9BP NM_207391.3 synonymous
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.963
• Publications: 0 publications found

Genes affected

RGS9BP (HGNC:30304): (regulator of G protein signaling 9 binding protein) The protein encoded by this gene functions as a regulator of G protein-coupled receptor signaling in phototransduction. Studies in bovine and mouse show that this gene is expressed only in the retina, and is localized in the rod outer segment membranes. This protein is associated with a heterotetrameric complex, specifically interacting with the regulator of G-protein signaling 9, and appears to function as the membrane anchor for the other largely soluble interacting partners. Mutations in this gene are associated with prolonged electroretinal response suppression (PERRS), also known as bradyopsia. [provided by RefSeq, Mar 2010]

ANKRD27 (HGNC:25310): (ankyrin repeat domain 27) Enables guanyl-nucleotide exchange factor activity and small GTPase binding activity. Involved in endocytic recycling and negative regulation of SNARE complex assembly. Acts upstream of or within early endosome to late endosome transport. Located in endosome; lysosome; and plasma membrane. Implicated in eosinophilic esophagitis. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Our verdict: Likely_benign. The variant received -5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.57).
• BP6: Variant 19-32676383-G-T is Benign according to our data. Variant chr19-32676383-G-T is described in ClinVar as Likely_benign. ClinVar VariationId is 2970936.Status of the report is criteria_provided_single_submitter, 1 stars.
• BP7: Synonymous conserved (PhyloP=0.963 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_207391.3. 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
	RGS9BP	NM_207391.3	MANE Select	c.120G>T	p.Leu40Leu	synonymous	Exon 1 of 1	NP_997274.2	Q6ZS82

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RGS9BP	ENST00000334176.4	TSL:6 MANE Select	c.120G>T	p.Leu40Leu	synonymous	Exon 1 of 1	ENSP00000334134.3	Q6ZS82
	ANKRD27	ENST00000590519.2	TSL:5	c.-628C>A		5_prime_UTR	Exon 1 of 4	ENSP00000464819.1	K7EIN0

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD2 exomes AF: 0.00000420 AC: 1 AN: 237984 AF XY: 0.00

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000292

Gnomad ASJ exome AF: 0.00

Gnomad EAS 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: 6.86e-7 AC: 1 AN: 1458064 Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0 AN XY: 725478

African (AFR) AF: 0.00 AC: 0 AN: 33376

American (AMR) AF: 0.0000224 AC: 1 AN: 44634

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26078

East Asian (EAS) AF: 0.00 AC: 0 AN: 39648

South Asian (SAS) AF: 0.00 AC: 0 AN: 86190

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 50980

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5592

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111286

Other (OTH) AF: 0.00 AC: 0 AN: 60280

GnomAD4 genome Cov.: 34

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000151

ClinVar

ClinVar submissions

Significance: Likely benign

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	-	1	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.57
CADD	Benign	9.4
DANN	Benign	0.90
PhyloP100		0.96
PromoterAI		-0.021	Neutral

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

dbSNP: rs768692545;

hg19: chr19-33167289;