19-41319579-G-C

Variant names:

• chr19-41319579-G-C
• rs575323158
• NM_052848.3:c.508G>C

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2 BP4

The NM_052848.3(CCDC97):​c.508G>C​(p.Glu170Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000692 in 1,444,108 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 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. E170K) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: CCDC97 NM_052848.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.11
• Publications: 0 publications found

Genes affected

CCDC97 (HGNC:28289): (coiled-coil domain containing 97)

TGFB1 (HGNC:11766): (transforming growth factor beta 1) This gene encodes a secreted ligand of the TGF-beta (transforming growth factor-beta) superfamily of proteins. Ligands of this family bind various TGF-beta receptors leading to recruitment and activation of SMAD family transcription factors that regulate gene expression. The encoded preproprotein is proteolytically processed to generate a latency-associated peptide (LAP) and a mature peptide, and is found in either a latent form composed of a mature peptide homodimer, a LAP homodimer, and a latent TGF-beta binding protein, or in an active form consisting solely of the mature peptide homodimer. The mature peptide may also form heterodimers with other TGFB family members. This encoded protein regulates cell proliferation, differentiation and growth, and can modulate expression and activation of other growth factors including interferon gamma and tumor necrosis factor alpha. This gene is frequently upregulated in tumor cells, and mutations in this gene result in Camurati-Engelmann disease. [provided by RefSeq, Aug 2016]

TGFB1 Gene-Disease associations (from GenCC):

• Camurati-Engelmann disease

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Labcorp Genetics (formerly Invitae), Genomics England PanelApp, Orphanet, Ambry Genetics, PanelApp Australia
• inflammatory bowel disease, immunodeficiency, and encephalopathy

  Inheritance: AR Classification: STRONG, MODERATE, SUPPORTIVE, LIMITED Submitted by: ClinGen, Orphanet, Labcorp Genetics (formerly Invitae), Ambry Genetics, PanelApp Australia
• cystic fibrosis

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.3873539).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_052848.3. 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
	CCDC97	NM_052848.3	MANE Select	c.508G>C	p.Glu170Gln	missense	Exon 3 of 5	NP_443080.1	Q96F63
	CCDC97	NM_001346100.2		c.313G>C	p.Glu105Gln	missense	Exon 3 of 5	NP_001333029.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CCDC97	ENST00000269967.4	TSL:1 MANE Select	c.508G>C	p.Glu170Gln	missense	Exon 3 of 5	ENSP00000269967.2	Q96F63
	CCDC97	ENST00000886246.1		c.601G>C	p.Glu201Gln	missense	Exon 4 of 6	ENSP00000556305.1
	TGFB1	ENST00000598758.5	TSL:5	n.302+12549C>G		intron	N/A

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.92e-7 AC: 1 AN: 1444108 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 716032

⚠️ 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: 33264

American (AMR) AF: 0.00 AC: 0 AN: 43840

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 24964

East Asian (EAS) AF: 0.00 AC: 0 AN: 39394

South Asian (SAS) AF: 0.0000119 AC: 1 AN: 83924

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52858

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5684

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1100558

Other (OTH) AF: 0.00 AC: 0 AN: 59622

⚠️ 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.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.14
BayesDel_addAF	Benign	-0.063	T
BayesDel_noAF	Benign	-0.33
CADD	Benign	23
DANN	Uncertain	1.0
DEOGEN2	Benign	0.059	T
Eigen	Uncertain	0.29
Eigen_PC	Uncertain	0.34
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Uncertain	0.90	D
M_CAP	Benign	0.0064	T
MetaRNN	Benign	0.39	T
MetaSVM	Benign	-0.75	T
MutationAssessor	Benign	1.7	L
PhyloP100		2.1
PrimateAI	Uncertain	0.64	T
PROVEAN	Benign	-1.4	N
REVEL	Benign	0.094
Sift	Benign	0.095	T
Sift4G	Benign	0.34	T
Polyphen		0.89	P
Vest4		0.20
MutPred		0.54		Gain of MoRF binding (P = 0.0393)
MVP		0.59
MPC		0.77
ClinPred		0.76	D
GERP RS		4.9
PromoterAI		-0.0036	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.20
gMVP		0.39
Mutation Taster		=81/19	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: rs575323158; hg19: chr19-41825484;