ArticleAsian Pacific journal of cancer prevention : APJCP2022
Circulating Cell Free DNA Integrity Index as a Biomarker for Response to Chemotherapy in Patients with Metastatic Colorectal Carcinoma.
Article in Asian Pacific journal of cancer prevention : APJCP, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers, 1 of them a synthesis that pooled it.
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5 citing papers in PubMed, 1 synthesis or guideline pooled it, 5 citations in OpenAlex.
- Diagnostic and prognostic significance of ALU-based cell-free DNA in colorectal cancer: a systematic review and meta-analysis.Frontiers in oncology · 2024Pooled it
- Metabolomics- and Proteomics-Based Disease Diagnostic Classifier Model for the Prediction and Diagnosis of Colorectal Carcinoma.Journal of proteome research · 2025Article
- Article
- Liquid biopsy: Comprehensive overview of circulating tumor DNA (Review).Oncology letters · 2024Review
- Correlation between plasma ccfDNA, mtDNA changes, CTCs, and epithelial-mesenchymal transition in breast cancer patients undergoing NACT.Turkish journal of medical sciences · 2024Article
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5 authors at 1 institution in 1 country.
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Abstract
objectiveAssessing plasma Cell Free DNA (cfDNA) integrity index as a biomarker for response prediction and early response evaluation in mCRC patients receiving chemotherapy, in comparison to Carcinoembryonic antigen (CEA) and Carbohydrate antigen 19-9 (CA19-9), to be used as an additional tool to computed tomography (CT).
methodsCEA, CA19-9, cfDNA concentration and cfDNA integrity index (ALU 247/115) measurements were conducted on 86 subjects divided into 43 healthy volunteers and 43 mCRC patients, before starting chemotherapy and then after 6-12 weeks of therapy initiation (3-4 cycles FOLFOX) at first response assessment. Plasma cfDNA integrity index was calculated as the ratio of long to short DNA fragments (ALU 247/115) amplified and detected by real-time PCR. Serum CEA and CA19-9 were measured by chemiluminescent immunometric assay.
resultsBaseline cfDNA integrity index was statistically significantly different between responders and non-responders (p=0.03). It was found that at cut off 0.608, sensitivity was 73.7%, specificity was 66.7% and diagnostic accuracy=69.77%. Markers with statistical significant difference between responders and non-responders after chemotherapy were CEA % change (p=0.035), CA19-9 (p=0.024), cfDNA integrity index (p=0.035) and cfDNA integrity index % change (p<0.001). Among these markers, cfDNA integrity index % change had the best sensitivity (84.2%), specificity (95.2%) and diagnostic accuracy (90.7%) at cut off -17.827%.
conclusionBaseline cfDNA integrity index can be used as a potential marker to predict response to chemotherapy. cfDNA integrity index (ALU 247/115) % change rather than its absolute value is superior to CEA, CA19-9, cfDNA concentration and their % changes in early assessment of response to chemotherapy.
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