rs749351351

Variant names:

• chr11-61397964-T-C
• rs749351351
• NM_001173990.3:c.420T>C

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 2P and 6B. PM2 BP4_Strong BP6 BP7

The NM_001173990.3(TMEM216):​c.420T>C​(p.Ala140Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000049 in 1,613,726 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 Conflicting classifications of pathogenicity (no stars).

• Frequency:
  • Genomes: 𝑓 0.000053 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000049 (0 hom.)
• Consequence: TMEM216 NM_001173990.3 synonymous
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3 B:2
• Conservation: PhyloP100: -3.80
• Publications: 0 publications found

Genes affected

TMEM216 (HGNC:25018): (transmembrane protein 216) This locus encodes a transmembrane domain-containing protein. Mutations at this locus have been associated with Meckel-Gruber Syndrome Type 2, and Joubert Syndrome 2, also known as Cerebello-oculorenal Syndrome 2. [provided by RefSeq, Aug 2010]

TMEM216 Gene-Disease associations (from GenCC):

• ciliopathy

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: ClinGen, PanelApp Australia
• Joubert syndrome 2

  Inheritance: AR Classification: STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae)
• Joubert syndrome with oculorenal defect

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• Meckel syndrome

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• orofaciodigital syndrome type 6

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.92).
• BP6: Variant 11-61397964-T-C is Benign according to our data. Variant chr11-61397964-T-C is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 305081.
• BP7: Synonymous conserved (PhyloP=-3.8 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001173990.3. 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
	TMEM216	NM_001173990.3	MANE Select	c.420T>C	p.Ala140Ala	synonymous	Exon 4 of 5	NP_001167461.1	Q9P0N5-1
	TMEM216	NM_001173991.3		c.420T>C	p.Ala140Ala	synonymous	Exon 4 of 5	NP_001167462.1	Q9P0N5-3
	TMEM216	NM_016499.6		c.237T>C	p.Ala79Ala	synonymous	Exon 4 of 5	NP_057583.2	Q9P0N5-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TMEM216	ENST00000515837.7	TSL:2 MANE Select	c.420T>C	p.Ala140Ala	synonymous	Exon 4 of 5	ENSP00000440638.1	Q9P0N5-1
	TMEM216	ENST00000334888.10	TSL:2	c.420T>C	p.Ala140Ala	synonymous	Exon 4 of 5	ENSP00000334844.5	Q9P0N5-3
	TMEM216	ENST00000398979.7	TSL:1	c.237T>C	p.Ala79Ala	synonymous	Exon 4 of 5	ENSP00000381950.3	J3QT25

Frequencies

GnomAD3 genomes AF: 0.0000526 AC: 8 AN: 152222 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00173

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000294

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000963 AC: 24 AN: 249126 AF XY: 0.000111

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00189

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000442

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000486 AC: 71 AN: 1461504 Hom.: 0 Cov.: 35 AF XY: 0.0000523 AC XY: 38 AN XY: 727066

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00214 AC: 56 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53204

Middle Eastern (MID) AF: 0.000173 AC: 1 AN: 5768

European-Non Finnish (NFE) AF: 0.00000540 AC: 6 AN: 1111864

Other (OTH) AF: 0.000133 AC: 8 AN: 60370

GnomAD4 genome AF: 0.0000526 AC: 8 AN: 152222 Hom.: 0 Cov.: 32 AF XY: 0.0000538 AC XY: 4 AN XY: 74374

African (AFR) AF: 0.00 AC: 0 AN: 41456

American (AMR) AF: 0.00 AC: 0 AN: 15284

Ashkenazi Jewish (ASJ) AF: 0.00173 AC: 6 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5202

South Asian (SAS) AF: 0.00 AC: 0 AN: 4834

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10628

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

European-Non Finnish (NFE) AF: 0.0000294 AC: 2 AN: 68030

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

Alfa AF: 0.000207 Hom.: 0

Bravo AF: 0.0000642

EpiCase AF: 0.0000545

EpiControl AF: 0.0000593

ClinVar

ClinVar submissions

Significance: Conflicting classifications of pathogenicity

Revision: criteria provided, conflicting classifications

Pathogenic	VUS	Benign	Condition
-	1	1	Joubert syndrome 2 (2)
-	-	1	Joubert syndrome (1)
-	1	-	Meckel syndrome, type 2 (1)
-	1	-	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.92
CADD	Benign	0.84
DANN	Benign	0.55
PhyloP100		-3.8
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.0

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

Other links and lift over

dbSNP: rs749351351; hg19: chr11-61165436;