rs747804736

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM1BS2

The NM_017849.4(TMEM127):​c.221A>G​(p.Tyr74Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000745 in 1,611,570 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. Y74S) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)
Exomes 𝑓: 0.0000069 ( 0 hom. )

Consequence

TMEM127
NM_017849.4 missense

Scores

1
9
8

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:6

Conservation

PhyloP100: 2.19

Publications

2 publications found
Variant links:
Genes affected
TMEM127 (HGNC:26038): (transmembrane protein 127) This gene encodes a transmembrane protein with four predicted transmembrane domains. The protein is associated with a subpopulation of vesicular organelles corresponding to early endosomal structures, with the Golgi, and with lysosomes, and may participate in protein trafficking between these structures. Mutations in this gene and several other genes cause pheochromocytomas. Alternatively spliced transcript variants encoding the same protein have been identified. [provided by RefSeq, Aug 2022]
TMEM127 Gene-Disease associations (from GenCC):
  • hereditary pheochromocytoma-paraganglioma
    Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
  • pheochromocytoma
    Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: PanelApp Australia, G2P, Ambry Genetics, Labcorp Genetics (formerly Invitae)
  • renal cell carcinoma
    Inheritance: AD Classification: MODERATE Submitted by: Genomics England PanelApp

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM1
In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 35 uncertain in NM_017849.4
BS2
High AC in GnomAdExome4 at 10 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_017849.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
TMEM127
NM_017849.4
MANE Select
c.221A>Gp.Tyr74Cys
missense
Exon 2 of 4NP_060319.1O75204
TMEM127
NM_001193304.3
c.221A>Gp.Tyr74Cys
missense
Exon 2 of 4NP_001180233.1O75204
TMEM127
NM_001407283.1
c.-9+708A>G
intron
N/ANP_001394212.1C9J4H2

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
TMEM127
ENST00000258439.8
TSL:1 MANE Select
c.221A>Gp.Tyr74Cys
missense
Exon 2 of 4ENSP00000258439.3O75204
TMEM127
ENST00000432959.2
TSL:1
c.221A>Gp.Tyr74Cys
missense
Exon 2 of 4ENSP00000416660.1O75204
TMEM127
ENST00000713753.1
c.-32A>G
5_prime_UTR_premature_start_codon_gain
Exon 3 of 5ENSP00000519054.1C9J4H2

Frequencies

GnomAD3 genomes
AF:
0.0000131
AC:
2
AN:
152166
Hom.:
0
Cov.:
32
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:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000294
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.0000289
AC:
7
AN:
242300
AF XY:
0.0000227
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 FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000554
Gnomad OTH exome
AF:
0.000167
GnomAD4 exome
AF:
0.00000685
AC:
10
AN:
1459404
Hom.:
0
Cov.:
31
AF XY:
0.00000689
AC XY:
5
AN XY:
725892
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33456
American (AMR)
AF:
0.00
AC:
0
AN:
44610
Ashkenazi Jewish (ASJ)
AF:
0.0000383
AC:
1
AN:
26102
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39684
South Asian (SAS)
AF:
0.00
AC:
0
AN:
85902
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
51940
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5766
European-Non Finnish (NFE)
AF:
0.00000720
AC:
8
AN:
1111624
Other (OTH)
AF:
0.0000166
AC:
1
AN:
60320
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.495
Heterozygous variant carriers
0
1
2
2
3
4
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
AF:
0.0000131
AC:
2
AN:
152166
Hom.:
0
Cov.:
32
AF XY:
0.0000135
AC XY:
1
AN XY:
74344
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
41448
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:
5198
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4832
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10612
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.0000294
AC:
2
AN:
68014
Other (OTH)
AF:
0.00
AC:
0
AN:
2086
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.525
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
Alfa
AF:
0.0000772
Hom.:
0
Bravo
AF:
0.00000756
ExAC
AF:
0.0000247
AC:
3

ClinVar

ClinVar submissions
Significance:Uncertain significance
Revision:criteria provided, multiple submitters, no conflicts
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
3
-
not provided (3)
-
1
-
Hereditary cancer-predisposing syndrome (1)
-
1
-
Hereditary pheochromocytoma-paraganglioma (1)
-
1
-
Pheochromocytoma (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.14
BayesDel_addAF
Uncertain
0.10
D
BayesDel_noAF
Uncertain
0.080
CADD
Uncertain
24
DANN
Uncertain
0.99
DEOGEN2
Benign
0.22
T
Eigen
Benign
0.099
Eigen_PC
Benign
0.16
FATHMM_MKL
Uncertain
0.80
D
LIST_S2
Benign
0.75
T
M_CAP
Uncertain
0.12
D
MetaRNN
Uncertain
0.53
D
MetaSVM
Benign
-0.46
T
MutationAssessor
Benign
1.4
L
PhyloP100
2.2
PrimateAI
Uncertain
0.73
T
PROVEAN
Pathogenic
-4.6
D
REVEL
Uncertain
0.63
Sift
Uncertain
0.0080
D
Sift4G
Benign
0.11
T
Polyphen
0.87
P
Vest4
0.49
MVP
0.74
MPC
0.52
ClinPred
0.35
T
GERP RS
4.3
Varity_R
0.39
gMVP
0.84
Mutation Taster
=48/52
disease causing

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

Other links and lift over

dbSNP: rs747804736; hg19: chr2-96930899; API