VACTERL association and maternal diabetes: a possible causal relationship?

Area of Science:

• Developmental Biology
• Teratology
• Endocrinology

Background:

• Maternal insulin-dependent diabetes mellitus is a known teratogen.
• Cardiac, renal, and skeletal anomalies are common in infants of diabetic mothers.
• The link between VACTERL association and maternal diabetes is under-recognized.

Purpose of the Study:

• To investigate the potential association between VACTERL association and maternal diabetes mellitus.
• To review existing literature and case reports on VACTERL and diabetic embryopathy.
• To discuss the pathogenetic mechanisms linking diabetic embryopathy to VACTERL phenotype.

Main Methods:

• Case report of a 3-year-old boy with VACTERL association.
• Detailed maternal pregnancy history including insulin-dependent diabetes and glycemic control.
• Literature review of additional VACTERL cases with first-trimester maternal diabetes exposure.

Main Results:

• The presented case exhibits multiple blastogenetic malformations consistent with VACTERL association.
• The mother had long-standing insulin-dependent diabetes with poor glycemic control during early pregnancy.
• Four additional VACTERL patients with first-trimester maternal diabetes exposure were identified in the literature.

Conclusions:

• While not definitively causal, the evidence suggests a potential link between maternal diabetes and VACTERL association.
• Diabetic embryopathy may contribute to the pathogenesis of VACTERL phenotype.
• Further research is needed to substantiate the relationship and understand underlying mechanisms.