Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP4_StrongBP6BS1
The NM_020975.6(RET):c.-23C>T variant causes a 5 prime UTR premature start codon gain change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000402 in 1,494,330 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (no stars).
Frequency
Genomes: 𝑓 0.00020 ( 0 hom., cov: 35)
Exomes 𝑓: 0.000022 ( 0 hom. )
Consequence
RET NM_020975.6 5_prime_UTR_premature_start_codon_gain
RET (HGNC:9967): (ret proto-oncogene) This gene encodes a transmembrane receptor and member of the tyrosine protein kinase family of proteins. Binding of ligands such as GDNF (glial cell-line derived neurotrophic factor) and other related proteins to the encoded receptor stimulates receptor dimerization and activation of downstream signaling pathways that play a role in cell differentiation, growth, migration and survival. The encoded receptor is important in development of the nervous system, and the development of organs and tissues derived from the neural crest. This proto-oncogene can undergo oncogenic activation through both cytogenetic rearrangement and activating point mutations. Mutations in this gene are associated with Hirschsprung disease and central hypoventilation syndrome and have been identified in patients with renal agenesis. [provided by RefSeq, Sep 2017]
Computational evidence support a benign effect (BayesDel_noAF=-0.67).
BP6
Variant 10-43077236-C-T is Benign according to our data. Variant chr10-43077236-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 3054907.Status of the report is no_assertion_criteria_provided, 0 stars.
BS1
Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.000204 (31/152090) while in subpopulation AFR AF= 0.000698 (29/41542). AF 95% confidence interval is 0.000499. There are 0 homozygotes in gnomad4. There are 16 alleles in male gnomad4 subpopulation. Median coverage is 35. This position pass quality control queck.
This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -