6-100390248-T-C

Variant names:

• chr6-100390248-T-C
• rs41318039
• NM_005068.3:c.*113A>G

Variant summary

Our verdict is Benign. The variant received -8 ACMG points: 0P and 8B. BP4_Strong BS1

The NM_005068.3(SIM1):​c.*113A>G variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000153 in 1,174,674 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 0.000026 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000014 (0 hom.)
• Consequence: SIM1 NM_005068.3 3_prime_UTR
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.522
• Publications: 5 publications found

Genes affected

SIM1 (HGNC:10882): (SIM bHLH transcription factor 1) SIM1 and SIM2 genes are Drosophila single-minded (sim) gene homologs. SIM1 transcript was detected only in fetal kidney out of various adult and fetal tissues tested. Since the sim gene plays an important role in Drosophila development and has peak levels of expression during the period of neurogenesis,it was proposed that the human SIM gene is a candidate for involvement in certain dysmorphic features (particularly the facial and skull characteristics), abnormalities of brain development, and/or cognitive disability of Down syndrome. [provided by RefSeq, Jul 2008]

SIM1 Gene-Disease associations (from GenCC):

• obesity due to SIM1 deficiency

  Inheritance: AD, AR Classification: DEFINITIVE, SUPPORTIVE Submitted by: G2P, Orphanet
• complex neurodevelopmental disorder

  Inheritance: AD Classification: STRONG Submitted by: Ambry Genetics

ACMG classification

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

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.51).
• BS1: Variant frequency is greater than expected in population sas. GnomAd4 allele frequency = 0.0000263 (4/152330) while in subpopulation SAS AF = 0.000829 (4/4824). AF 95% confidence interval is 0.000283. There are 0 homozygotes in GnomAd4. There are 2 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005068.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SIM1	NM_005068.3	MANE Select	c.*113A>G		3_prime_UTR	Exon 12 of 12	NP_005059.2
	SIM1	NM_001374769.1		c.*113A>G		3_prime_UTR	Exon 12 of 12	NP_001361698.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SIM1	ENST00000369208.8	TSL:1 MANE Select	c.*113A>G		3_prime_UTR	Exon 12 of 12	ENSP00000358210.4
	SIM1	ENST00000262901.4	TSL:1	c.*113A>G		3_prime_UTR	Exon 11 of 11	ENSP00000262901.4

Frequencies

GnomAD3 genomes AF: 0.0000263 AC: 4 AN: 152212 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000829

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.0000137 AC: 14 AN: 1022344 Hom.: 0 Cov.: 13 AF XY: 0.0000233 AC XY: 12 AN XY: 514474

African (AFR) AF: 0.00 AC: 0 AN: 23420

American (AMR) AF: 0.00 AC: 0 AN: 27998

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 17862

East Asian (EAS) AF: 0.00 AC: 0 AN: 37244

South Asian (SAS) AF: 0.000228 AC: 14 AN: 61382

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 38022

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 3970

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 767422

Other (OTH) AF: 0.00 AC: 0 AN: 45024

GnomAD4 genome AF: 0.0000263 AC: 4 AN: 152330 Hom.: 0 Cov.: 32 AF XY: 0.0000268 AC XY: 2 AN XY: 74492

African (AFR) AF: 0.00 AC: 0 AN: 41578

American (AMR) AF: 0.00 AC: 0 AN: 15302

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5184

South Asian (SAS) AF: 0.000829 AC: 4 AN: 4824

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10626

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68024

Other (OTH) AF: 0.00 AC: 0 AN: 2114

Alfa AF: 0.00 Hom.: 7

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.51
CADD	Benign	7.2
DANN	Benign	0.83
PhyloP100		0.52

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: rs41318039; hg19: chr6-100838124;