A maximum of two somatic variations per sample was identified, involving genes associated with immune response (PTPRD, PSMA6 and CD274) and tumour suppression (PALB2, ATRX and BRCA2).<h4>Conclusion</h4>Although these data suggest that genetic mutational events occur similarly in erosive and reticular OLP, further molecular studies are required to confirm the findings. Here, ATRX is linked to neoplasm.