Prof. Piotr Radziszewski – New generation oncological biomarkers – focusing on Chronix company

Prof. Piotr Radziszewski. New generation oncological biomarkers – focusing on Chronix company. 1.10.2016.

We present a lecture delivered at the 5th Polish women and men health debate according to Medical guidelines – kidney cancer, bladder cancer.

By | November 3rd, 2016|Medical publications, Video|0 Comments

Predicting Treatment Outcomes in Immunotherapy

Weiss, G. et al. Tumor cell-free DNA copy number instability (CNI) to predict therapeutic response to immunotherapy prior to cycle 2. J ClinOncol 34, 2016 (suppl; abstr 3027).

We measured CNAs changes during treatment by computing a genomic copy number instability index (CNI) of cfDNA and Treg-specific demethylation region (TSDR) as measure for Tregs% of leukocytes compared to response.

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Breast Cancer Liquid Biopsy Screening Test

Beck, J. et al. Cell-free DNA copy number variations as a marker for breast cancer in a large study cohort. J ClinOncol 31, 2013 (suppl; abstr 11013).

Using comparative massive parallel sequencing of cfDNA from cancer patients vs. controls, we were able to show that a 16-region model based on CNV, is useful to distinguish patients with breast cancer from matched controls.

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NGS Animal Model for MRD in Breast Cancer

Beck, J. et al. Structural variation in mammary carcinomas and their detection in cell-free plasma DNA. PLOS One 2013 (10.1371/journal.pone.0075485).

Mammary tumors are the most frequent cancers in female dogs exhibiting a variety of histopathological differences. There is lack of knowledge about the genomes of these common dog tumors. Five tumors of three different histological subtypes were evaluated.

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Breast Cancer cfDNA with NGS

Beck, J. et al. Next Generation Sequencing of Serum Circulating Nucleic Acids from Invasive Ductal Breast Cancer Patients Reveals Differences to Healthy and Non-malignant Controls. Mol. Cancer Res. 2010; 8: 385-92.

Circulating nucleic acids (CNA) isolated from serum or plasma are increasingly recognized as biomarkers for cancers.We report specific DNA-transposable element sequences that could discriminate all stages of invasive ductal breast carcinoma with significant specificity and sensitivity.

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NGS of cell-free DNA in Healthy Humans

Beck, J. et al. Profile of the circulating DNA in apparently healthy individuals. Clin Chem. 2009; 55: 730-8.

Circulating nucleic acids (CNAs) have been shown to have diagnostic utility in human diseases. The use of mass sequencing and bioinformatics provides the basis for new diagnostic approaches that use CNAs as biomarkers for both malignant and nonmalignant diseases.

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Liquid biopsies in predicting and monitoring response to therapy in advanced pancreatic cancer

Madappa N. Kundranda Genomic change index (GCI) and liquid biopsies in predicting and monitoring response to therapy in advanced pancreatic ductal adenocarcinoma (PDAC). J Clin Oncol 33, 2015 (suppl 3; abstr 309).

Advanced PDAC is a lethal disease with dismal 5 year survival. The current modalities for monitoring therapy response using serum (CA) 19-9 levels have poor specificity and radiological responses have long lag times. Tests for rapid and accurate clinical assessment are needed for early decision making.

By | November 2nd, 2016|Medical publications|0 Comments

Prognostic value of cell-free DNA in patients with oropharyngeal cancers.

Julia Beck, Margret Rave-Fraenk, et al. Prognostic value of cell-free DNA in patients with oropharyngeal cancers.J Clin Oncol 34, 2016 (suppl; abstr e17511).

Tumor derived plasma cell-free DNA (TcfDNA) is described as biomarker to monitor tumor burden in cancer. Large somatic genome aberrations are hallmarks of malignancies and detectable in cfDNA. However, levels of TcfDNA are variable according to cancer types. We obtained copy-number instability (CNI) scores of cfDNA in treatment-naïve head and neck cancers before and after therapy.

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Combining Genome Change Index (GCI) and liquid biopsy to predict and monitor therapeutic responses.

Ekkehard Schütz, Julia Beck, Donald Peter Braun, Howard B. Urnovitz , et al. Combining Genome Change Index (GCI) and liquid biopsy to predict and monitor therapeutic responses.J Clin Oncol 33, 2015 (suppl; abstr e22020) .

Genomic instability of tumor cells has been associated with a poor prognosis. However, impaired DNA repair pathways leading to genomic instability are also described to increase tumor sensitivity to DNA damaging agents. A comprehensive Genomic Change Index (GCI) as an indicator of defective DNA repair is proposed as a potential predictor of cytotoxic chemotherapy (chemo) response.

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Quantifying copy number variations in cell-free DNA for potential clinical utility from a large prostate cancer cohort.

Ekkehard Schütz, Howard B. Urnovitz, et al. Quantifying copy number variations in cell-free DNA for potential clinical utility from a large prostate cancer cohort J Clin Oncol 31, 2013 (suppl; abstr 5072).

Prostate cancer (PrCa) is the most frequent non-dermatological malignancy in the male population. Genomic instability resulting in copy number variation (CNV) is a hallmark of malignant transformation.

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