11-61392647-C-G

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 4P and 2B. PM1PM2BP4_Moderate

The NM_001173990.3(TMEM216):c.16C>G(p.Leu6Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000716 in 1,535,980 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. L6L) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000072 ( 0 hom. )

Consequence

TMEM216
NM_001173990.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.89

Variant links:

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM1

In a chain Transmembrane protein 216 (size 144) in uniprot entity TM216_HUMAN there are 12 pathogenic changes around while only 4 benign (75%) in NM_001173990.3

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.10246739).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
TMEM216	NM_001173990.3 linkuse as main transcript	c.16C>G	p.Leu6Val	missense_variant	1/5	ENST00000515837.7
TMEM216	NM_001173991.3 linkuse as main transcript	c.16C>G	p.Leu6Val	missense_variant	1/5
TMEM216	NM_001330285.2 linkuse as main transcript	c.-182C>G		5_prime_UTR_variant	1/5
TMEM216	NM_016499.6 linkuse as main transcript	c.-182C>G		5_prime_UTR_variant	1/5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TMEM216	ENST00000515837.7 linkuse as main transcript	c.16C>G	p.Leu6Val	missense_variant	1/5	2	NM_001173990.3	P4	Q9P0N5-1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152192

Hom.:

Cov.:

show subpopulations

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:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000297

AC:

AN:

134686

Hom.:

AF XY:

0.0000545

AC XY:

AN XY:

73338

show subpopulations

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 SAS exome

AF:

0.000178

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000723

AC:

AN:

1383788

Hom.:

Cov.:

AF XY:

0.0000117

AC XY:

AN XY:

682836

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000126

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152192

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74342

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

ExAC

AF:

0.0000612

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Familial aplasia of the vermis

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Jun 03, 2022

This sequence change replaces leucine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 6 of the TMEM216 protein (p.Leu6Val). This variant is present in population databases (rs767812535, gnomAD 0.02%). This variant has not been reported in the literature in individuals affected with TMEM216-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0"). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.077

BayesDel_addAF

Benign

-0.15

BayesDel_noAF

Benign

-0.19

Cadd

Benign

Dann

Uncertain

0.98

DEOGEN2

Benign

0.0093

T;.

Eigen

Benign

-0.00059

Eigen_PC

Benign

0.14

FATHMM_MKL

Benign

0.62

LIST_S2

Benign

0.46

T;T

M_CAP

Uncertain

0.12

MetaRNN

Benign

0.10

T;T

MetaSVM

Benign

-0.63

MutationAssessor

Benign

0.0

N;N

MutationTaster

Benign

1.0

D;N;N

PrimateAI

Benign

0.40

PROVEAN

Benign

-0.22

N;N

REVEL

Uncertain

0.30

Sift

Benign

0.54

T;T

Sift4G

Benign

0.60

T;T

Vest4

0.18

MutPred

0.15

Gain of MoRF binding (P = 0.0979);Gain of MoRF binding (P = 0.0979);

MVP

0.72

MPC

0.13

ClinPred

0.21

GERP RS

5.6

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.0

Varity_R

0.10

gMVP

0.10

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