MicroRNA-375 as a biomarker for malignant transformation in oral lesions

Amani M. Harrandah, Sarah G. Fitzpatrick, Molly H. Smith, Dunrui Wang, Donald M. Cohen, Edward K.L. Chan

Research output: Contribution to journalArticlepeer-review

28 Scopus citations


Objective Malignant transformation of oral premalignant lesions is the key process in the progression to oral squamous cell carcinoma (OSCC). Previously, we identified miR-7 and miR-21 as candidate oncogenes and miR-375 and miR-494 as candidate tumor suppressors in OSCC. We aim to evaluate these microRNAs as biomarkers of malignant transformation in oral premalignant lesions. Study Design Formalin-fixed, paraffin-embedded samples from progressive premalignant lesions and paired sequential OSCC tumors at the same site were obtained from same patients (n = 31). Total RNA was extracted and analyzed for microRNA levels using real-time polymerase chain reaction. Results MiR-375 expression in progressive lesions was clearly lower than in nonprogressive control lesions (average eightfold difference, P = .0004). Furthermore, the expression of miR-375 decreased significantly after the progression from premalignant lesion to OSCC (P < .0001). Receiver operating characteristic curve analysis revealed that miR-375 was able to differentiate between progressive and nonprogressive premalignant lesions (P < .0001). Conclusions MiR-375 downregulation in oral premalignant lesions is associated with a higher risk of malignant transformation.

Original languageEnglish
Pages (from-to)743-752.e1
JournalOral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
Issue number6
StatePublished - Dec 1 2016

Bibliographical note

Funding Information:
This study was funded by the University of Florida institutional funds, Andrew J. Semesco Foundation, Ocala, Florida, USA; UMM ALQURA University, Saudi Arabia; and Saudi Arabian Cultural Mission to the United States.

Publisher Copyright:
© 2016 Elsevier Inc.

ASJC Scopus subject areas

  • Surgery
  • Oral Surgery
  • Pathology and Forensic Medicine
  • Dentistry (miscellaneous)
  • Radiology Nuclear Medicine and imaging


Dive into the research topics of 'MicroRNA-375 as a biomarker for malignant transformation in oral lesions'. Together they form a unique fingerprint.

Cite this