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Mendeliome v2.59 SEPTIN6 Zornitza Stark Mode of inheritance for gene: SEPTIN6 was changed from X-LINKED: hemizygous mutation in males, monoallelic mutations in females may cause disease (may be less severe, later onset than males) to X-LINKED: hemizygous mutation in males, biallelic mutations in females
Mendeliome v2.58 SEPTIN6 Zornitza Stark edited their review of gene: SEPTIN6: Changed mode of inheritance: X-LINKED: hemizygous mutation in males, biallelic mutations in females
Mendeliome v2.58 SEPTIN6 Zornitza Stark Marked gene: SEPTIN6 as ready
Mendeliome v2.58 SEPTIN6 Zornitza Stark Gene: septin6 has been classified as Amber List (Moderate Evidence).
Mendeliome v2.58 SEPTIN6 Zornitza Stark Classified gene: SEPTIN6 as Amber List (moderate evidence)
Mendeliome v2.58 SEPTIN6 Zornitza Stark Gene: septin6 has been classified as Amber List (Moderate Evidence).
Mendeliome v2.57 SEPTIN6 Zornitza Stark gene: SEPTIN6 was added
gene: SEPTIN6 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: SEPTIN6 was set to X-LINKED: hemizygous mutation in males, monoallelic mutations in females may cause disease (may be less severe, later onset than males)
Publications for gene: SEPTIN6 were set to 42088107; 34677878
Phenotypes for gene: SEPTIN6 were set to Inborn error of immunity, MONDO:0003778, SEPTIN6-related
Review for gene: SEPTIN6 was set to AMBER
Added comment: PMID 34677878 and PMID 42088107 report three patients from two independent families with X‑linked severe congenital neutropenia, B‑cell aplasia and variable T‑cell lymphopenia caused by stop‑loss variants in SEPTIN6; one is inherited from unaffected mother (two affected sibs) and the other is de novo.

Functional studies in PMID 34677878: patient skin fibroblast-derived induced pluripotent stem cells (iPSCs) produced reduced myeloid colonies, particularly of the granulocyte lineage. CRISPR/Cas9 knock-in of the patient's mutation or complete knock-out of SEPT6 was not tolerated in non-patient-derived iPSCs or human myeloid cell lines, but SEPT6 knock-out was successful in an erythroid cell line and resulting clones revealed a propensity to multinucleation. In silico analysis predicted that the mutated protein hinders the dimerization of SEPT6 coiled-coils in both parallel and antiparallel arrangements, which could in turn impair filament formation.
Sources: Literature