Transient Neonatal Zinc Deficiency Caused by a Heterozygous G87R Mutation in the Zinc Transporter ZnT-2 (SLC30A2) Gene in the Mother Highlighting the Importance of Zn²⁺ for Normal Growth and Development

Table 1

Laboratory data of the child (II.3) and mother.

	Child			Mother
	Before Zn^2+; supplementation	After 1 month on Zn^2+; supplementation	Normative values
Zn^2+ in serum (μmol/L)	2.3	14.6	9–21	12.2 (11–18)
Alkaline phosphatase (IU/L)	73	465	96–336	88 (36–108)
IGF-I (ng/mL)	10 (−2.3 SDS)	62 (0 SDS)	18–146
IGF-BP3 (mg/L)	0.89 (−2.9 SDS)	2.95 (+0.5 SDS)	1.19–3.81
Zn^2+ in breast milk (mg/kg)				0.12 mg/kg (0.2–0.76^(6))