One child and two adolescents (cases 3a, 3h, and 3i) with mild‐moderate central hypothyroidism, exhibited growth retardation or a decline in growth velocity; as previously detailed, 3a exhibited a growth response to levothyroxine (Figure 3) and 3i also exhibited improved growth after twelve months of levothyroxine treatment (height SDS improvement from SDS −1.86 to +1.67); however, his levothyroxine dose continues to be adjusted since his thyroid hormone concentrations remain suboptimal (FT4 12.4 pmol/L, RR 12.6‐21), precluding full assessment of his response. Here, TG is linked to Central hypothyroidism.