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Is VACTERL a laterality defect?

Thomas W Sadler1,2

  • 1Senior Fellow, Greenwood Genetics Center, Grennwood, South Carolina.

American Journal of Medical Genetics. Part A
|July 15, 2015
PubMed
Summary

The VACTERL association

Area of Science:

  • Developmental Biology
  • Medical Genetics

Background:

  • The etiology of VACTERL association, a complex group of birth defects, is currently unknown.
  • Dr. John Opitz's hypothesis proposed the midline as a developmental field influenced by external signals.
  • Recent research highlights the critical role of left-right axis (laterality) and its communication with the anterior-posterior axis in development.

Purpose of the Study:

  • To explore the potential origins of VACTERL association defects.
  • To investigate the role of disrupted laterality signaling in VACTERL etiology.
  • To connect established developmental theories with current understanding of VACTERL.

Main Methods:

  • Review of existing developmental biology theories.
  • Analysis of molecular signaling pathways involved in axis specification.
Keywords:
VACTERLZIC3heterotaxylateralityleft-right axismidline

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  • Correlation of heterotaxy cases with midline defects.

    • Main Results:

    • Coordination of molecular signals for left-right and anterior-posterior axis specification is essential for normal development.
    • Disruption of laterality signaling can lead to midline and other developmental defects.
    • Heterotaxy, characterized by disrupted laterality, presents with defects similar to VACTERL.

    Conclusions:

    • Altered signaling in establishing the left-right axis may underlie the defects observed in VACTERL association.
    • The midline's developmental field may be indirectly affected by laterality disruptions.
    • Further research into laterality signaling could elucidate VACTERL etiology.