chr13-28050157-G-C

Variant names:

• chr13-28050157-G-C
• rs1933437
• NM_004119.3:c.680C>G

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_004119.3(FLT3):​c.680C>G​(p.Thr227Arg) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. 15/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T227M) has been classified as Benign.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: FLT3 NM_004119.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 3.79
• Publications: 0 publications found

Genes affected

FLT3 (HGNC:3765): (fms related receptor tyrosine kinase 3) This gene encodes a class III receptor tyrosine kinase that regulates hematopoiesis. This receptor is activated by binding of the fms-related tyrosine kinase 3 ligand to the extracellular domain, which induces homodimer formation in the plasma membrane leading to autophosphorylation of the receptor. The activated receptor kinase subsequently phosphorylates and activates multiple cytoplasmic effector molecules in pathways involved in apoptosis, proliferation, and differentiation of hematopoietic cells in bone marrow. Mutations that result in the constitutive activation of this receptor result in acute myeloid leukemia and acute lymphoblastic leukemia. [provided by RefSeq, Jan 2015]

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FLT3	NM_004119.3	c.680C>G	p.Thr227Arg	missense_variant	Exon 6 of 24	ENST00000241453.12	NP_004110.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FLT3	ENST00000241453.12	c.680C>G	p.Thr227Arg	missense_variant	Exon 6 of 24	1	NM_004119.3	ENSP00000241453.7
FLT3	ENST00000380987.2	n.680C>G		non_coding_transcript_exon_variant	Exon 6 of 25	1		ENSP00000370374.2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1461680 Hom.: 0 Cov.: 40 AF XY: 0.00 AC XY: 0 AN XY: 727164

African (AFR) AF: 0.00 AC: 0 AN: 33474

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26130

East Asian (EAS) AF: 0.00 AC: 0 AN: 39686

South Asian (SAS) AF: 0.00 AC: 0 AN: 86256

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53414

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111844

Other (OTH) AF: 0.00 AC: 0 AN: 60384

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.083
BayesDel_addAF	Benign	-0.023	T
BayesDel_noAF	Benign	-0.27
CADD	Benign	19
DANN	Benign	0.93
DEOGEN2	Benign	0.33	T
Eigen	Benign	-0.54
Eigen_PC	Benign	-0.46
LIST_S2	Benign	0.70	T
M_CAP	Benign	0.062	D
MetaRNN	Uncertain	0.71	D
MetaSVM	Benign	-0.64	T
MutationAssessor	Benign	0.90	L
PhyloP100		3.8
PrimateAI	Benign	0.47	T
PROVEAN	Benign	-1.2	N
Sift	Uncertain	0.0080	D
Sift4G	Benign	0.46	T
Vest4		0.56
ClinPred		0.50	D
GERP RS		3.9
Varity_R		0.15
gMVP		0.68
Mutation Taster		=92/8	polymorphism

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

Other links and lift over

dbSNP: rs1933437; hg19: chr13-28624294;