rs4274474

Variant names:

• chr17-1771833-C-A
• rs4274474
• NM_002615.7:c.440-39C>A

Your query was ambiguous. Multiple possible variants found:

• chr17-1771833-C-A
• chr17-1771833-C-G
• chr17-1771833-C-T

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_002615.7(SERPINF1):​c.440-39C>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 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: not found (cov: 31)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: SERPINF1 NM_002615.7 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -2.89
• Publications: 14 publications found

Genes affected

SERPINF1 (HGNC:8824): (serpin family F member 1) This gene encodes a member of the serpin family that does not display the serine protease inhibitory activity shown by many of the other serpin proteins. The encoded protein is secreted and strongly inhibits angiogenesis. In addition, this protein is a neurotrophic factor involved in neuronal differentiation in retinoblastoma cells. Mutations in this gene were found in individuals with osteogenesis imperfecta, type VI. [provided by RefSeq, Aug 2016]

SERPINF1 Gene-Disease associations (from GenCC):

• osteogenesis imperfecta type 6

  Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), Laboratory for Molecular Medicine
• osteogenesis imperfecta type 3

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• osteogenesis imperfecta type 4

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.84).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SERPINF1	NM_002615.7	c.440-39C>A		intron_variant	Intron 4 of 7	ENST00000254722.9	NP_002606.3
SERPINF1	NM_001329905.2	c.-161C>A		5_prime_UTR_variant	Exon 1 of 4		NP_001316834.1
SERPINF1	NM_001329903.2	c.440-39C>A		intron_variant	Intron 4 of 7		NP_001316832.1
SERPINF1	NM_001329904.2	c.-122-39C>A		intron_variant	Intron 3 of 6		NP_001316833.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SERPINF1	ENST00000254722.9	c.440-39C>A		intron_variant	Intron 4 of 7	1	NM_002615.7	ENSP00000254722.4

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1442192 Hom.: 0 Cov.: 26 AF XY: 0.00 AC XY: 0 AN XY: 718190

African (AFR) AF: 0.00 AC: 0 AN: 33222

American (AMR) AF: 0.00 AC: 0 AN: 44518

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26040

East Asian (EAS) AF: 0.00 AC: 0 AN: 39614

South Asian (SAS) AF: 0.00 AC: 0 AN: 85718

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 45660

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4182

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1103418

Other (OTH) AF: 0.00 AC: 0 AN: 59820

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.84
CADD	Benign	0.11
DANN	Benign	0.58
PhyloP100		-2.9
PromoterAI		-0.054	Neutral
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: rs4274474; hg19: chr17-1675127;