Lemon frost geckos: a model for tumour growth?
Loeb J · The Veterinary record · 1 August 2026
Lemon frost geckos develop heritable metastatic pigment cell tumors, offering a natural model for comparative oncology research.
The lemon frost gecko (Correlophus ciliatus morph) presents a unique and compelling case in comparative oncology due to its extraordinary susceptibility to iridophoroma, a pigment cell tumor that arises from iridophores and demonstrates metastatic behavior spreading throughout the body. This discussion piece explores emerging research investigating the genetic and biological underpinnings of this phenomenon, with particular focus on whether the lemon frost gecko could serve as a naturally occurring animal model for understanding metastasis in human cancers. The lemon frost coloration is linked to a specific genetic mutation, and virtually all lemon frost geckos develop these tumors, suggesting a strong heritable component. Researchers are examining the molecular pathways involved in tumor initiation, progression, and metastatic spread in these reptiles, drawing parallels to melanoma and other pigment cell-derived cancers in humans and other species. For veterinary professionals working with exotic reptiles, awareness of this condition is clinically relevant as affected animals require monitoring for tumor development and spread. Beyond clinical management, the lemon frost gecko represents a rare opportunity where a naturally occurring, genetically consistent tumor model may yield translational insights applicable to comparative oncology. Understanding this condition may also inform breeding recommendations for gecko owners and breeders seeking to reduce the prevalence of this heritable disease in captive populations.
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