rs1468358104

Variant summary

Our verdict is Pathogenic. The variant received 20 ACMG points: 20P and 0B. PVS1PS1_ModeratePM2PP5_Very_Strong

The NM_014053.4(FLVCR1):​c.2T>C​(p.Met1?) variant causes a start lost change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000156 in 1,283,410 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★).

Frequency

Genomes: not found (cov: 33)
Exomes 𝑓: 0.0000016 ( 0 hom. )

Consequence

FLVCR1
NM_014053.4 start_lost

Scores

5
4
6

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:4

Conservation

PhyloP100: 1.51

Publications

1 publications found
Variant links:
Genes affected
FLVCR1 (HGNC:24682): (FLVCR choline and heme transporter 1) This gene encodes a member of the major facilitator superfamily of transporter proteins. The encoded protein is a heme transporter that may play a critical role in erythropoiesis by protecting developing erythroid cells from heme toxicity. This gene may play a role in posterior column ataxia with retinitis pigmentosa and the hematological disorder Diamond-Blackfan syndrome. [provided by RefSeq, Jan 2011]
FLVCR1-DT (HGNC:39077): (FLVCR1 divergent transcript)

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 20 ACMG points.

PVS1
Start lost variant, next in-frame start position is after 16 pathogenic variants. Next in-frame start position is after 151 codons. Genomic position: 212858903. Lost 0.270 part of the original CDS.
PS1
Another start lost variant in NM_014053.4 (FLVCR1) was described as [Pathogenic] in ClinVar
PM2
Very rare variant in population databases, with high coverage;
PP5
Variant 1-212858454-T-C is Pathogenic according to our data. Variant chr1-212858454-T-C is described in ClinVar as Pathogenic/Likely_pathogenic. ClinVar VariationId is 521372.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_014053.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
FLVCR1
NM_014053.4
MANE Select
c.2T>Cp.Met1?
start_lost
Exon 1 of 10NP_054772.1Q9Y5Y0-1

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
FLVCR1
ENST00000366971.9
TSL:1 MANE Select
c.2T>Cp.Met1?
start_lost
Exon 1 of 10ENSP00000355938.4Q9Y5Y0-1
FLVCR1
ENST00000867613.1
c.2T>Cp.Met1?
start_lost
Exon 1 of 11ENSP00000537672.1
FLVCR1
ENST00000971333.1
c.2T>Cp.Met1?
start_lost
Exon 1 of 10ENSP00000641392.1

Frequencies

GnomAD3 genomes
Cov.:
33
GnomAD2 exomes
AF:
0.0000370
AC:
2
AN:
54006
AF XY:
0.0000364
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:
0.0000982
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000156
AC:
2
AN:
1283410
Hom.:
0
Cov.:
31
AF XY:
0.00000161
AC XY:
1
AN XY:
622752
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
27728
American (AMR)
AF:
0.00
AC:
0
AN:
19620
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
18718
East Asian (EAS)
AF:
0.00
AC:
0
AN:
34414
South Asian (SAS)
AF:
0.00
AC:
0
AN:
62996
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
31010
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
3674
European-Non Finnish (NFE)
AF:
0.00000194
AC:
2
AN:
1031970
Other (OTH)
AF:
0.00
AC:
0
AN:
53280
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.550
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
GnomAD4 genome
Cov.:
33

ClinVar

ClinVar submissions
Significance:Pathogenic/Likely pathogenic
Revision:criteria provided, multiple submitters, no conflicts
View on ClinVar
Pathogenic
VUS
Benign
Condition
2
-
-
not provided (2)
1
-
-
Inborn genetic diseases (1)
1
-
-
Posterior column ataxia-retinitis pigmentosa syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Pathogenic
0.48
D
BayesDel_noAF
Uncertain
0.020
CADD
Benign
22
DANN
Benign
0.97
DEOGEN2
Benign
0.12
T
Eigen
Benign
-0.18
Eigen_PC
Benign
-0.073
FATHMM_MKL
Uncertain
0.88
D
LIST_S2
Uncertain
0.90
D
M_CAP
Pathogenic
0.98
D
MetaRNN
Pathogenic
0.98
D
MetaSVM
Benign
-0.35
T
PhyloP100
1.5
PROVEAN
Benign
-0.37
N
REVEL
Uncertain
0.49
Sift
Pathogenic
0.0
D
Sift4G
Pathogenic
0.0
D
Polyphen
0.037
B
Vest4
0.62
MutPred
0.99
Gain of glycosylation at M1 (P = 7e-04)
MVP
0.96
ClinPred
0.84
D
GERP RS
4.6
PromoterAI
-0.052
Neutral
RBP_binding_hub_radar
1.1
RBP_regulation_power_radar
2.9
Varity_R
0.83
gMVP
0.34
Mutation Taster
=9/191
disease causing (ClinVar)

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: rs1468358104; hg19: chr1-213031796; API