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Publication-only abstracts (abstract number preceded by an "e"), published in conjunction with the 2019 ASCO Annual Meeting but not presented at the Meeting, can be found online only.

Imaging biomarker phenotyping system (iBiopsy) to accelerate hepatocellular carcinoma (HCC) drug development.

Sub-category:
Hepatobiliary Cancer

Category:
Gastrointestinal (Noncolorectal) Cancer

Meeting:
2019 ASCO Annual Meeting

Abstract No:
e15671

Citation:
J Clin Oncol 37, 2019 (suppl; abstr e15671)

Author(s): Yan Liu, Corinne Ramos, Pierre Baudot, Johan Brag, Olivier Lucidarme; Median Technologies, Valbonne, France; Radiology Unit, Pitié Salpétrière Hospital, APHP, Paris, France

Abstract Disclosures

Abstract:

Background: Current drug therapies in HCC remain limited because of substantial genomic, cellular and molecular heterogeneity of the liver tumor microenvironment (TME). This heterogeneity has implications for tumor development, immune response and cellular invasion and is compounded by multiple molecular pathways related to the various HCC etiologies. In this context, it is challenging to find biomarkers that are predictive of therapeutic response or outcome. A systems biology approach leveraging the iBiopsy phenotyping platform to automatically detect HCC and TME subtypes using non-invasive medical imaging could help identify specific disease pathways and accelerate HCC drug development. Methods: In this retrospective study, 50 patients with primary HCC were used to extract voxel level image signatures from the segmented livers on CT scans. The automatic classification of liver signatures was obtained by Log Linear Local density peak clustering computed using Wasserstein’s optimal transport distance between Gray Level Co-occurrence matrices of local luminance tiles of the Liver. Through this hypothesis-free clustering, phenotypes representative of tumor and tumor environment were identified and further correlated with clinical data. Results: Nine classes of statistically significantly distant clusters were identified on the 50 patients. Preliminary correlation analysis on individual patient showed that up to 3 clusters were specific to the tumor and characterized phenotype heterogeneity within the tumor. Notably, specific clusters at the tumor front-line and surrounding adjacent non-tumoral tissue were also identified. Conclusions: Preliminary results show that a multiplicity of phenotypes representative of a complex heterogeneous lesion and tissue microenvironment that might have prognostic and predictive value can be identified. This support the use of a non-invasive phenotypic approach for the subtyping of HCC that can be used for the identification of a multiplicity of important biological pathways that can be specifically targeted to treat HCC.

 
Other Abstracts in this Sub-Category:

 

1. A multicenter randomized controlled trial to evaluate the efficacy of surgery vs. radiofrequency ablation for small hepatocellular carcinoma (SURF trial).

Meeting: 2019 ASCO Annual Meeting Abstract No: 4002 First Author: Namiki Izumi
Category: Gastrointestinal (Noncolorectal) Cancer - Hepatobiliary Cancer

 

2. ABC-06 | A randomised phase III, multi-centre, open-label study of Active Symptom Control (ASC) alone or ASC with oxaliplatin / 5-FU chemotherapy (ASC+mFOLFOX) for patients (pts) with locally advanced / metastatic biliary tract cancers (ABC) previously-treated with cisplatin/gemcitabine (CisGem) chemotherapy.

Meeting: 2019 ASCO Annual Meeting Abstract No: 4003 First Author: Angela Lamarca
Category: Gastrointestinal (Noncolorectal) Cancer - Hepatobiliary Cancer

 

3. Nivolumab (NIVO) + ipilimumab (IPI) combination therapy in patients (pts) with advanced hepatocellular carcinoma (aHCC): Results from CheckMate 040.

Meeting: 2019 ASCO Annual Meeting Abstract No: 4012 First Author: Thomas Yau
Category: Gastrointestinal (Noncolorectal) Cancer - Hepatobiliary Cancer

 

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