rs1555614832

chr17-31232113-C-Achr17-31232113-C-Gchr17-31232113-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PM1 PM5 PP2

The NM_001042492.3(NF1):c.3238C>A(p.Leu1080Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. 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. L1080P) has been classified as Likely pathogenic.

• Frequency:
  • Genomes: not found (cov: 27)
  • Exomes 𝑓: 8.1e-7 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: NF1 NM_001042492.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.38

Genes affected

NF1 (HGNC:7765): (neurofibromin 1) This gene product appears to function as a negative regulator of the ras signal transduction pathway. Mutations in this gene have been linked to neurofibromatosis type 1, juvenile myelomonocytic leukemia and Watson syndrome. The mRNA for this gene is subject to RNA editing (CGA>UGA->Arg1306Term) resulting in premature translation termination. Alternatively spliced transcript variants encoding different isoforms have also been described for this gene. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 5 ACMG points.

• PM1: In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 2 benign, 13 uncertain in NM_001042492.3
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr17-31232114-T-C is described in ClinVar as [Likely_pathogenic]. Clinvar id is 431978.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• PP2: Missense variant where missense usually causes diseases, NF1

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
NF1	NM_001042492.3	c.3238C>A	p.Leu1080Ile	missense_variant	25/58	ENST00000358273.9
NF1	NM_000267.3	c.3238C>A	p.Leu1080Ile	missense_variant	25/57

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
NF1	ENST00000358273.9	c.3238C>A	p.Leu1080Ile	missense_variant	25/58	1	NM_001042492.3	P1

Frequencies

GnomAD3 genomes Cov.: 27

GnomAD4 exome Data not reliable, filtered out with message: AS_VQSR AF: 8.11e-7 AC: 1 AN: 1232568 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 616166

Gnomad4 AFR exome AF: 0.00

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: 0.0000231

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 27

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.92
BayesDel_addAF	Benign	0.0093	T
BayesDel_noAF	Benign	-0.22
Cadd	Uncertain	24
Dann	Uncertain	0.99
DEOGEN2	Uncertain	0.71	D;.;T
Eigen	Uncertain	0.58
Eigen_PC	Uncertain	0.51
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Uncertain	0.94	D;D;D
M_CAP	Pathogenic	0.82	D
MetaRNN	Uncertain	0.56	D;D;D
MetaSVM	Benign	-0.91	T
MutationAssessor	Pathogenic	3.1	M;M;.
MutationTaster	Benign	1.0	D;D
PrimateAI	Pathogenic	0.85	D
PROVEAN	Benign	-1.4	N;N;N
REVEL	Benign	0.24
Sift	Uncertain	0.0050	D;D;D
Sift4G	Uncertain	0.0050	D;D;D
Polyphen		0.98	D;D;.
Vest4		0.66
MutPred		0.43		Gain of catalytic residue at L1085 (P = 0.1037);Gain of catalytic residue at L1085 (P = 0.1037);.;
MVP		0.49
MPC		1.7
ClinPred		0.98	D
GERP RS		4.4
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.38
gMVP		0.39

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr17-29559131;