Table 3.

Dual-Energy X-ray Absorptiometry of the Patient With an ESR1 Variant

Age (year & month)	Z-score (total)	Z-score (lumbar)	Z-score (femoral neck)	Z-score (total hip)	T-score (lumbar)	T-score (femoral neck)	T-score (total hip)
155/12	–2.3	–3.8	___	___	___	___	___
174/12	–2.4	–4.4	___	___	___	___	___
233/12	___	–4.3	–3.2	–2.9	–4.5	–3.2	–2.9

Dual-energy x-ray absorptiometry (DXA) from the initial presentation at age 15 years and 5 months to the most recent follow-up visit at age 23 years and 3 months. Note the continued reduction in bone mineral density with the most recent T-score of –4.5 at the lumbar spine and –2.9 at the femoral neck.