X-155507053-C-T

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP4_StrongBP7BS2

The NM_018196.4(TMLHE):​c.840G>A​(p.Gln280Gln) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000331 in 1,208,196 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 3 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.000027 ( 0 hom., 3 hem., cov: 22)
Exomes 𝑓: 9.1e-7 ( 0 hom. 0 hem. )

Consequence

TMLHE
NM_018196.4 synonymous

Scores

2

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.368
Variant links:
Genes affected
TMLHE (HGNC:18308): (trimethyllysine hydroxylase, epsilon) This gene encodes the protein trimethyllysine dioxygenase which is the first enzyme in the carnitine biosynthesis pathway. Carnitine play an essential role in the transport of activated fatty acids across the inner mitochondrial membrane. The encoded protein converts trimethyllysine into hydroxytrimethyllysine. A pseudogene of this gene is found on chromosome X. Alternate splicing results in multiple transcript variants.[provided by RefSeq, May 2010]
TMLHE-AS1 (HGNC:44261): (TMLHE antisense RNA 1)

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -9 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.48).
BP7
Synonymous conserved (PhyloP=0.368 with no splicing effect.
BS2
High Hemizygotes in GnomAd4 at 3 AD gene

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
TMLHENM_018196.4 linkc.840G>A p.Gln280Gln synonymous_variant Exon 6 of 8 ENST00000334398.8 NP_060666.1 Q9NVH6-1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
TMLHEENST00000334398.8 linkc.840G>A p.Gln280Gln synonymous_variant Exon 6 of 8 1 NM_018196.4 ENSP00000335261.3 Q9NVH6-1
TMLHEENST00000369439.4 linkc.840G>A p.Gln280Gln synonymous_variant Exon 6 of 7 1 ENSP00000358447.4 Q9NVH6-2
TMLHEENST00000675642.1 linkc.873G>A p.Gln291Gln synonymous_variant Exon 7 of 9 ENSP00000502604.1 Q9NVH6-8
TMLHE-AS1ENST00000452506.1 linkn.67+17664C>T intron_variant Intron 1 of 1 5

Frequencies

GnomAD3 genomes
AF:
0.0000270
AC:
3
AN:
111109
Hom.:
0
Cov.:
22
AF XY:
0.0000897
AC XY:
3
AN XY:
33447
show subpopulations
Gnomad AFR
AF:
0.0000652
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:
0.0000190
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.0000109
AC:
2
AN:
182903
Hom.:
0
AF XY:
0.00
AC XY:
0
AN XY:
67591
show subpopulations
Gnomad AFR exome
AF:
0.000152
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS 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:
9.12e-7
AC:
1
AN:
1097087
Hom.:
0
Cov.:
30
AF XY:
0.00
AC XY:
0
AN XY:
363005
show subpopulations
Gnomad4 AFR exome
AF:
0.0000380
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
AF:
0.0000270
AC:
3
AN:
111109
Hom.:
0
Cov.:
22
AF XY:
0.0000897
AC XY:
3
AN XY:
33447
show subpopulations
Gnomad4 AFR
AF:
0.0000652
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000190
Gnomad4 OTH
AF:
0.00
Bravo
AF:
0.0000340
EpiCase
AF:
0.0000546
EpiControl
AF:
0.00

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.48
CADD
Benign
5.1
DANN
Benign
0.74

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.

Other links and lift over

dbSNP: rs199989202; hg19: chrX-154736714; API