rs104893679

Variant names:

• chr3-97791797-G-C
• rs104893679
• NM_001278293.3:c.506G>C
• ARL6 p.Gly169Ala

Your query was ambiguous. Multiple possible variants found:

• chr3-97791797-G-C
• chr3-97791797-G-T

Variant summary

Our verdict is Pathogenic. The variant received 19 ACMG points: 19P and 0B. PS3 PM1 PP2 PP3_Strong PP5_Very_Strong

The NM_001278293.3(ARL6):​c.506G>C​(p.Gly169Ala) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000118 in 1,613,646 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 13/22 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★). ClinVar reports functional evidence for this variant: "SCV003023658: Experimental studies have shown that this missense change affects ARL6 function (PMID:19236846).". Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G169C) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000012 (0 hom.)
• Consequence: ARL6 NM_001278293.3 missense
• Clinical Significance: Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:3 O:1
• Conservation: PhyloP100: 9.52
• Publications: 7 publications found

Genes affected

ARL6 (HGNC:13210): (ADP ribosylation factor like GTPase 6) The protein encoded by this gene belongs to the ARF-like (ADP ribosylation factor-like) sub-family of the ARF family of GTP-binding proteins which are involved in regulation of intracellular traffic. Mutations in this gene are associated with Bardet-Biedl syndrome (BBS). A vision-specific transcript, encoding long isoform BBS3L, has been described (PMID: 20333246). [provided by RefSeq, Apr 2016]

ARL6 Gene-Disease associations (from GenCC):

• Bardet-Biedl syndrome 3

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae), Genomics England PanelApp, Ambry Genetics
• ciliopathy

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
• retinitis pigmentosa 55

  Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P
• retinitis pigmentosa

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• Bardet-Biedl syndrome

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Pathogenic. The variant received 19 ACMG points.

• PS3: PS3 evidence extracted from ClinVar submissions: SCV003023658: Experimental studies have shown that this missense change affects ARL6 function (PMID: 19236846).
• PM1: In a hotspot region, there are 3 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 10 uncertain in NM_001278293.3
• PP2: Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 10 curated pathogenic missense variants (we use a threshold of 10). The gene has 2 curated benign missense variants. Gene score misZ: 0.55514 (below the threshold of 3.09). Trascript score misZ: 0.75863 (below the threshold of 3.09). GenCC associations: The gene is linked to retinitis pigmentosa 55, ciliopathy, Bardet-Biedl syndrome 3, Bardet-Biedl syndrome, retinitis pigmentosa.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.988
• PP5: Variant 3-97791797-G-C is Pathogenic according to our data. Variant chr3-97791797-G-C is described in ClinVar as Pathogenic/Likely_pathogenic. ClinVar VariationId is 2041.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001278293.3. 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
	ARL6	NM_001278293.3	MANE Select	c.506G>C	p.Gly169Ala	missense	Exon 7 of 8	NP_001265222.1	Q9H0F7-1
	ARL6	NM_001323513.2		c.506G>C	p.Gly169Ala	missense	Exon 7 of 9	NP_001310442.1	Q9H0F7-2
	ARL6	NM_032146.5		c.506G>C	p.Gly169Ala	missense	Exon 8 of 9	NP_115522.1	Q9H0F7-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ARL6	ENST00000463745.6	TSL:2 MANE Select	c.506G>C	p.Gly169Ala	missense	Exon 7 of 8	ENSP00000419619.1	Q9H0F7-1
	ARL6	ENST00000493990.5	TSL:1	n.506G>C		non_coding_transcript_exon	Exon 8 of 10	ENSP00000418057.1	Q9H0F7-1
	ARL6	ENST00000631834.2	TSL:4	c.506G>C	p.Gly169Ala	missense	Exon 7 of 9	ENSP00000488530.2	Q9H0F7-2

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152182 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000147

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.00000398 AC: 1 AN: 251336 AF XY: 0.00000736

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000880

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000123 AC: 18 AN: 1461464 Hom.: 0 Cov.: 30 AF XY: 0.00000963 AC XY: 7 AN XY: 727058

African (AFR) AF: 0.00 AC: 0 AN: 33466

American (AMR) AF: 0.00 AC: 0 AN: 44716

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26118

East Asian (EAS) AF: 0.00 AC: 0 AN: 39592

South Asian (SAS) AF: 0.00 AC: 0 AN: 86250

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53400

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5762

European-Non Finnish (NFE) AF: 0.0000153 AC: 17 AN: 1111792

Other (OTH) AF: 0.0000166 AC: 1 AN: 60368

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152182 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 74340

African (AFR) AF: 0.00 AC: 0 AN: 41450

American (AMR) AF: 0.00 AC: 0 AN: 15278

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5200

South Asian (SAS) AF: 0.00 AC: 0 AN: 4826

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10616

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68026

Other (OTH) AF: 0.00 AC: 0 AN: 2088

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000756

ClinVar

ClinVar submissions

Significance: Pathogenic/Likely pathogenic

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
1	-	-	Bardet-Biedl syndrome 3 (1)
1	-	-	Bardet-Biedl syndrome 3;C2936862:Bardet-Biedl syndrome 1;C3150808:Retinitis pigmentosa 55 (1)
1	-	-	Bardet-Biedl syndrome 3;C3150808:Retinitis pigmentosa 55 (1)
-	-	-	Bardet-Biedl syndrome 1, modifier of (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.85
BayesDel_addAF	Pathogenic	0.45	D
BayesDel_noAF	Pathogenic	0.41
CADD	Pathogenic	29
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.80	D
Eigen	Pathogenic	0.94
Eigen_PC	Pathogenic	0.83
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.97	D
M_CAP	Pathogenic	0.41	D
MetaRNN	Pathogenic	0.99	D
MetaSVM	Pathogenic	0.94	D
MutationAssessor	Pathogenic	3.8	H
PhyloP100		9.5
PrimateAI	Pathogenic	0.79	T
PROVEAN	Pathogenic	-5.6	D
REVEL	Pathogenic	0.95
Sift	Pathogenic	0.0	D
Sift4G	Uncertain	0.0030	D
Varity_R		0.96
gMVP		0.83
Mutation Taster		=6/94	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
Splicevardb		2.0
SpliceAI score (max)		0.020		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: rs104893679;

hg19: chr3-97510641;