Non-Autoimmune Hyperthyroidism Associated With a Novel Germline Mutation (D633N) in the TSH Receptor. - Mori S; Osaki Y; Fukazawa H; Matsuda T; Murayama Y; Sugano Y; Iwasaki H; Mathis BJ; Sekiya M; Shimano H (Case reports in endocrinology, 2026)