NM_016169.4:c.172G>C

Variant names:

• chr10-102504324-G-C
• rs766897671
• NM_016169.4:c.172G>C

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_016169.4(SUFU):​c.172G>C​(p.Val58Leu) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,804 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V58I) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: SUFU NM_016169.4 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 5.81
• Publications: 0 publications found

Genes affected

SUFU (HGNC:16466): (SUFU negative regulator of hedgehog signaling) The Hedgehog signaling pathway plays an important role in early human development. The pathway is a signaling cascade that plays a role in pattern formation and cellular proliferation during development. This gene encodes a negative regulator of the hedgehog signaling pathway. Defects in this gene are a cause of medulloblastoma. Alternative splicing results in multiple transcript variants.[provided by RefSeq, May 2010]

SUFU Gene-Disease associations (from GenCC):

• medulloblastoma

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), ClinGen
• nevoid basal cell carcinoma syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Illumina, Genomics England PanelApp
• basal cell nevus syndrome 2

  Inheritance: AD Classification: STRONG Submitted by: G2P
• ocular motor apraxia, Cogan type

  Inheritance: AD Classification: STRONG Submitted by: Franklin by Genoox
• Joubert syndrome 32

  Inheritance: AR Classification: STRONG, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), G2P, Ambry Genetics
• Joubert syndrome

  Inheritance: AR, AD Classification: MODERATE, SUPPORTIVE Submitted by: Orphanet, Ambry Genetics
• apraxia

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
• ciliopathy

  Inheritance: AR Classification: LIMITED Submitted by: ClinGen

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.2006048).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_016169.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SUFU	NM_016169.4	MANE Select	c.172G>C	p.Val58Leu	missense	Exon 1 of 12	NP_057253.2
	SUFU	NM_001178133.2		c.172G>C	p.Val58Leu	missense	Exon 1 of 11	NP_001171604.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SUFU	ENST00000369902.8	TSL:1 MANE Select	c.172G>C	p.Val58Leu	missense	Exon 1 of 12	ENSP00000358918.4
	SUFU	ENST00000423559.2	TSL:1	c.172G>C	p.Val58Leu	missense	Exon 1 of 10	ENSP00000411597.2
	SUFU	ENST00000369899.6	TSL:1	c.172G>C	p.Val58Leu	missense	Exon 1 of 11	ENSP00000358915.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000403 AC: 1 AN: 248178 AF XY: 0.00000742

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

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: 6.84e-7 AC: 1 AN: 1461804 Hom.: 0 Cov.: 53 AF XY: 0.00000138 AC XY: 1 AN XY: 727198

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44720

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.0000116 AC: 1 AN: 86248

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53360

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

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111998

Other (OTH) AF: 0.00 AC: 0 AN: 60394

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 32

ExAC AF: 0.00000824 AC: 1

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	1	-	Gorlin syndrome;C0025149:Medulloblastoma (1)
-	1	-	Hereditary cancer-predisposing syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.26
BayesDel_addAF	Benign	-0.096	T
BayesDel_noAF	Benign	-0.28
CADD	Uncertain	25
DANN	Benign	0.93
DEOGEN2	Benign	0.20	T
Eigen	Benign	-0.26
Eigen_PC	Benign	-0.029
FATHMM_MKL	Uncertain	0.82	D
LIST_S2	Uncertain	0.90	D
M_CAP	Uncertain	0.092	D
MetaRNN	Benign	0.20	T
MetaSVM	Benign	-0.70	T
MutationAssessor	Benign	0.80	N
PhyloP100		5.8
PrimateAI	Pathogenic	0.89	D
PROVEAN	Benign	-0.72	N
REVEL	Benign	0.27
Sift	Benign	0.60	T
Sift4G	Benign	0.83	T
Polyphen		0.0020	B
Vest4		0.19
MutPred		0.49		Loss of sheet (P = 0.0025)
MVP		0.28
MPC		0.60
ClinPred		0.40	T
GERP RS		4.7
PromoterAI		-0.092	Neutral
Varity_R		0.46
gMVP		0.60
Mutation Taster		=67/33	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.15		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: rs766897671; hg19: chr10-104264081;