Biophotonic detection of high order chromatin alterations in field carcinogenesis predicts risk of future hepatocellular carcinoma: A pilot study

• Published in: PloS one Vol. 13; no. 5; p. e0197427
• Main Authors: Kalman, Richard S, Stawarz, Andrew, Nunes, David, Zhang, Di, Dela Cruz, Mart A, Mohanty, Arpan, Subramanian, Hariharan, Backman, Vadim, Roy, Hemant K
• Format: Journal Article
• Language: English
• Published: United States Public Library of Science 17.05.2018; Public Library of Science (PLoS)
• Subjects: Adult; Biology and Life Sciences; Biomedical engineering; Biopsy; Body mass; Cancer; Carcinogenesis; Carcinogens; Carcinoma, Hepatocellular - diagnosis; Carcinoma, Hepatocellular - genetics; Care and treatment; Case-Control Studies; Chromatin; Chromatin - genetics; Cirrhosis; Colon; Diagnosis; Engineering; Esophagus; Experimental design; Female; Gastroenterology; Gene expression; Genomes; Health risks; Hepatocellular carcinoma; Hepatocytes; Humans; Liver; Liver biopsy; Liver cancer; Liver cirrhosis; Liver Neoplasms - diagnosis; Liver Neoplasms - genetics; Lungs; Male; Medical prognosis; Medical screening; Medicine; Medicine and Health Sciences; MicroRNAs; Microscopy; Middle Aged; Patients; Pilot Projects; Prostate; Prostate cancer; Risk; Risk Assessment; Risk factors; Smoking; Spectrum analysis; Ultrasonic imaging; United States > US; Massachusetts; Illinois
• ISSN: 1932-6203; 1932-6203
• DOI: 10.1371/journal.pone.0197427

Hepatocellular carcinoma (HCC) results from chronic inflammation/cirrhosis. Unfortunately, despite use of radiological/serological screening techniques, HCC ranks as a leading cause of cancer deaths. Our group has used alterations in high order chromatin as a marker for field carcinogenesis and hence risk for a variety of cancers (including colon, lung, prostate, ovarian, esophageal). In this study we wanted to address whether these chromatin alterations occur in HCC and if it could be used for risk stratification. A case control study was performed in patients with cirrhosis who went on to develop HCC and patients with cirrhosis who did not develop cancer. We performed partial wave spectroscopic microscopy (PWS) which measures nanoscale alterations on formalin fixed deparaffinized liver biopsy specimens, 17 progressors and 26 non-progressors. Follow up was 2089 and 2892 days, respectively. PWS parameter disorder strength Ld were notably higher for the progressors (Ld = 1.47 ± 0.76) than the non-progressors (Ld = 1.00 ± 0.27) (p = 0.024). Overall, the Cohen's d effect size was 0.907 (90.7%). AUROC analysis yielded an area of 0.70. There was no evidence of confounding by gender, age, BMI, smoking status and race. High order chromatin alterations, as detected by PWS, is altered in pre-malignant hepatocytes with cirrhosis and may predict future risk of HCC.