Although she has no known MEN1 pathogenic variant, she was clinically considered to have MEN117 with a history of hyperparathyroidism due to multiglandular hyperplasia for which she underwent parathyroidectomy and the lung NET, as described above.18 She was found to harbour a likely pathogenic variant in APC [Adenomatous Polyposis Coli] (c.3920T > A, p.IIe1307Lys). The gene discussed is MEN1; the disease is medical procedure.