4-53391045-A-T

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_030917.4(FIP1L1):​c.542A>T​(p.Asn181Ile) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,457,938 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 Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

FIP1L1
NM_030917.4 missense

Scores

12
5

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.78

Publications

0 publications found
Variant links:
Genes affected
FIP1L1 (HGNC:19124): (factor interacting with PAPOLA and CPSF1) This gene encodes a subunit of the CPSF (cleavage and polyadenylation specificity factor) complex that polyadenylates the 3' end of mRNA precursors. This gene, the homolog of yeast Fip1 (factor interacting with PAP), binds to U-rich sequences of pre-mRNA and stimulates poly(A) polymerase activity. Its N-terminus contains a PAP-binding site and its C-terminus an RNA-binding domain. An interstitial chromosomal deletion on 4q12 creates an in-frame fusion of human genes FIP1L1 and PDGFRA (platelet-derived growth factor receptor, alpha). The FIP1L1-PDGFRA fusion gene encodes a constitutively activated tyrosine kinase that joins the first 233 amino acids of FIP1L1 to the last 523 amino acids of PDGFRA. This gene fusion and chromosomal deletion is the cause of some forms of idiopathic hypereosinophilic syndrome (HES). This syndrome, recently reclassified as chronic eosinophilic leukemia (CEL), is responsive to treatment with tyrosine kinase inhibitors. Alternative splicing results in multiple transcript variants encoding distinct isoforms. [provided by RefSeq, Oct 2008]

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.895

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_030917.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
FIP1L1
NM_030917.4
MANE Select
c.542A>Tp.Asn181Ile
missense
Exon 8 of 18NP_112179.2
FIP1L1
NM_001376744.1
c.542A>Tp.Asn181Ile
missense
Exon 8 of 19NP_001363673.1
FIP1L1
NM_001376745.1
c.542A>Tp.Asn181Ile
missense
Exon 8 of 19NP_001363674.1A0A994J6B4

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
FIP1L1
ENST00000337488.11
TSL:1 MANE Select
c.542A>Tp.Asn181Ile
missense
Exon 8 of 18ENSP00000336752.6Q6UN15-1
ENSG00000282278
ENST00000507166.5
TSL:2
c.542A>Tp.Asn181Ile
missense
Exon 8 of 24ENSP00000423325.1A0A0B4J203
FIP1L1
ENST00000306932.10
TSL:1
c.497A>Tp.Asn166Ile
missense
Exon 7 of 15ENSP00000302993.6Q6UN15-3

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD2 exomes
AF:
0.00000403
AC:
1
AN:
248384
AF XY:
0.00
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.0000296
Gnomad ASJ exome
AF:
0.00
Gnomad EAS 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:
0.00000137
AC:
2
AN:
1457938
Hom.:
0
Cov.:
30
AF XY:
0.00
AC XY:
0
AN XY:
725308
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33296
American (AMR)
AF:
0.0000454
AC:
2
AN:
44020
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26040
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39510
South Asian (SAS)
AF:
0.00
AC:
0
AN:
85480
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53344
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5716
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
1110320
Other (OTH)
AF:
0.00
AC:
0
AN:
60212
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
GnomAD4 genome
Cov.:
32

ClinVar

ClinVar submissions as Germline
Significance:Uncertain significance
Revision:criteria provided, single submitter
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
1
-
not specified (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.97
BayesDel_addAF
Uncertain
0.15
D
BayesDel_noAF
Pathogenic
0.15
CADD
Pathogenic
32
DANN
Uncertain
0.99
DEOGEN2
Uncertain
0.50
T
Eigen
Pathogenic
0.86
Eigen_PC
Pathogenic
0.80
FATHMM_MKL
Uncertain
0.97
D
LIST_S2
Pathogenic
0.98
D
M_CAP
Pathogenic
0.31
D
MetaRNN
Pathogenic
0.90
D
MetaSVM
Uncertain
0.76
D
MutationAssessor
Pathogenic
3.4
M
PhyloP100
5.8
PROVEAN
Pathogenic
-8.3
D
REVEL
Pathogenic
0.85
Sift
Pathogenic
0.0
D
Sift4G
Pathogenic
0.0010
D
Polyphen
1.0
D
Vest4
0.88
MutPred
0.70
Loss of ubiquitination at K186 (P = 0.0566)
MVP
0.79
MPC
2.2
ClinPred
1.0
D
GERP RS
5.6
Varity_R
0.96
gMVP
0.47
Mutation Taster
=75/25
polymorphism

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.18
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: rs746477796; hg19: chr4-54257212; API