chr17-77354710-C-T

Variant names:

• chr17-77354710-C-T
• rs771685174
• NM_001113491.2:c.77-47349C>T

Variant summary

Our verdict is Benign. The variant received -8 ACMG points: 0P and 8B. BP4_Strong BS2

The NM_001113491.2(SEPTIN9):​c.77-47349C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00027 in 152,124 control chromosomes in the GnomAD database, with no homozygous occurrence. 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 0.00027 (0 hom., cov: 32)
• Consequence: SEPTIN9 NM_001113491.2 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.149
• Publications: 0 publications found

Genes affected

SEPTIN9 (HGNC:7323): (septin 9) This gene is a member of the septin family involved in cytokinesis and cell cycle control. This gene is a candidate for the ovarian tumor suppressor gene. Mutations in this gene cause hereditary neuralgic amyotrophy, also known as neuritis with brachial predilection. A chromosomal translocation involving this gene on chromosome 17 and the MLL gene on chromosome 11 results in acute myelomonocytic leukemia. Multiple alternatively spliced transcript variants encoding different isoforms have been described.[provided by RefSeq, Mar 2009]

SEPTIN9 Gene-Disease associations (from GenCC):

• amyotrophic neuralgia

  Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
• neuralgic amyotrophy

  Inheritance: AD Classification: MODERATE Submitted by: ClinGen

ACMG classification

Our verdict: Benign. The variant received -8 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.8).
• BS2: High AC in GnomAd4 at 41 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SEPTIN9	NM_001113491.2	c.77-47349C>T		intron_variant	Intron 2 of 11	ENST00000427177.6	NP_001106963.1
SEPTIN9	NM_006640.5	c.22+34362C>T		intron_variant	Intron 1 of 10	ENST00000329047.13	NP_006631.2
SEPTIN9	NM_001293695.2	c.20-47349C>T		intron_variant	Intron 1 of 10		NP_001280624.1
SEPTIN9	NM_001113492.2	c.-416-47349C>T		intron_variant	Intron 2 of 11		NP_001106964.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SEPTIN9	ENST00000427177.6	c.77-47349C>T		intron_variant	Intron 2 of 11	1	NM_001113491.2	ENSP00000391249.1
SEPTIN9	ENST00000329047.13	c.22+34362C>T		intron_variant	Intron 1 of 10	1	NM_006640.5	ENSP00000329161.8

Frequencies

GnomAD3 genomes AF: 0.000270 AC: 41 AN: 152124 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000241

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: 0.000588

Gnomad OTH AF: 0.00

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.000270 AC: 41 AN: 152124 Hom.: 0 Cov.: 32 AF XY: 0.000242 AC XY: 18 AN XY: 74282

African (AFR) AF: 0.0000241 AC: 1 AN: 41446

American (AMR) AF: 0.00 AC: 0 AN: 15262

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.00 AC: 0 AN: 5162

South Asian (SAS) AF: 0.00 AC: 0 AN: 4832

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10606

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.000588 AC: 40 AN: 68030

Other (OTH) AF: 0.00 AC: 0 AN: 2090

Alfa AF: 0.000139 Hom.: 0

Bravo AF: 0.000257

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.80
CADD	Benign	5.1
DANN	Benign	0.61
PhyloP100		0.15
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1

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: rs771685174; hg19: chr17-75350792;