Virtual Library

 x 
My Library Virtual Library FAQ

Start Your Search

R. Dziadziuszko



Author of

  • +

    P1.02 - Poster Session with Presenters Present (ID 454)

    • Event: WCLC 2016
    • Type: Poster Presenters Present
    • Track: Biology/Pathology
    • Presentations: 1
    • +

      P1.02-025 - Evaluation of NGS and RT-PCR Methods for ALK Assessment in European NSCLC Patients: Results from the ETOP Lungscape Project (ID 5001)

      14:30 - 14:30  |  Author(s): R. Dziadziuszko

      • Abstract

      Background:
      The reported prevalence of ALK rearrangement in NSCLC ranges from 2%-7%, depending on population and detection method. The primary standard diagnostic method is fluorescence in situ hybridization (FISH). Recently, immunohistochemistry (IHC) has also proven to be a reproducible and sensitive technique. Reverse transcriptase-polymerase chain reaction (RT-PCR) has been advocated and most recently the advent of targeted Next-Generation Sequencing (NGS) for ALK and other fusions has become possible. This is one of the first studies comparing all 4 techniques in resected NSCLC from the large ETOP Lungscape cohort.

      Methods:
      96 cases from the ETOP Lungscape iBiobank (N=2709) selected based on any degree of IHC staining (clone 5A4 antibody, Novocastra, UK) were examined by FISH (Abbott Molecular, Inc.; Blackhall, JCO 2014), central RT-PCR and NGS. H-score 120 is used as cutoff for IHC+. For both RT-PCR and NGS, RNA was extracted from the same formalin-fixed, paraffin-embedded tissues. For RT-PCR, primers were used covering the most frequent ALK translocations. For NGS, the Oncomine™ Solid Tumour Fusion Transcript Kit was used, allowing simultaneous sequencing of 70 ALK, RET and ROS1 specific fusion transcripts associated with NSCLC, as well as novel ALK translocations using 5’-3’ ALK gene expression ‘Imbalance Assay’.

      Results:
      NGS provided results for 90 cases, while RT-PCR for 77. Overall, 70 cases have results for all 4 methods, with fully concordant 60 (85.7%) cases (49 ALK-, 11 ALK+). Before employing the ‘Imbalance Assay', in 5 of the remaining 10 cases, NGS differs from the other methods (3 NGS-, 2 NGS+), while in the other 5, NGS agrees with RT-PCR in all, IHC in 2, and FISH in 1. Using the concordant result of at least two of the three methods as true negative/positive, the specificity and sensitivity of the fourth is 96/94/100/96% and 94/94/89/72% for IHC/FISH/RT-PCR/NGS, respectively (incorporating imbalance: NGS sensitivity=83%). Imbalance scores are presented here for 18 NGS- cases: 9 ‘NGS-/FISH+/IHC+’, 9 ‘NGS-/FISH-/IHC-‘. Among the ‘NGS-/FISH+/IHC+’, there is strong evidence of imbalance in 4 cases (score’s range: 0.0144-0.0555), uncertain in 5 (range: 0.0030-0.0087), and no evidence (scores≤0.0004) in the 9 negative cases.

      Conclusion:
      NGS is a useful screening tool for ALK rearrangement status, superior to RT-PCR when RNA yield is limited. When using NGS, it is critically important to integrate the 5’-3’ imbalance assay and to confirm with one or more additional methods in the ‘imbalance’ cases. Data further highlight the possibility of missing actionable rearrangements when only one screening methodology is available.

  • +

    P2.06 - Poster Session with Presenters Present (ID 467)

    • Event: WCLC 2016
    • Type: Poster Presenters Present
    • Track: Scientific Co-Operation/Research Groups (Clinical Trials in Progress should be submitted in this category)
    • Presentations: 1
    • +

      P2.06-024 - Tedopi vs Standard Treatment as 2nd or 3rd Line in HLA-A2 Positive Advanced NSCLC Patients in a Phase 3, Randomized Trial: ATALANTE-1 (ID 5329)

      14:30 - 14:30  |  Author(s): R. Dziadziuszko

      • Abstract

      Background:
      HLA-A2 is expressed in 40 to 50% of NSCLC patients. TEDOPI is a combination of neoepitopes that generates cytotoxic T lymphocytes responses. It consists of nine HLA-A2 supertype binding epitopes covering five tumor-associated antigens overexpressed in advanced NSCLC and the universal helper pan-DR epitope. In a phase II trial (NCT00104780, Barve et al. JCO 2008), TEDOPI showed a promising median overall survival of 17.3 months with a manageable safety profile in pre-treated HLA-A2 positive patients with advanced NSCLC. ATALANTE-1 (NCT02654587) is a randomized, open-label, phase 3 study comparing the efficacy and safety of TEDOPI with standard treatment in HLA-A2 positive patients with advanced NSCLC, as second- or third-line therapy.

      Methods:
      Section not applicable

      Results:
      Trial design: Patients with advanced NSCLC without EGFR-sensitizing mutations or ALK rearrangements, with progressive disease to first-line platinum-based chemotherapy or second-line immune checkpoint inhibitors (IC) are eligible if they have HLA-A2 positivity and ECOG PS 0-1. Treated and asymptomatic brain metastases are allowed. Patients are randomized 1:1 to receive 1 ml TEDOPI subcutaneously Q3W for 6 cycles, then every two months for the reminder of the year and finally every three months or standard treatment with: 75 mg/m[2] docetaxel Q3W or 500 mg/m[2] pemetrexed Q3W (in non-squamous histology and pemetrexed-naïve patients). In both arms, treatment continues until progression, intolerable toxicity, consent withdrawal, or investigator decision. In TEDOPI arm, treatment may continue beyond initial radiographic disease progression in case of clinical benefit. Randomisation is stratified by histology (squamous vs. non-squamous), initial response to first-line chemotherapy (partial or complete response vs. stabilization or progression), and previous treatment with IC (yes vs. no). Tumor assessment is performed every 6 weeks and adverse events are collected throughout the study and for 60 days and 90 days thereafter and graded per NCI CTCAE v4.0. Archival biopsies samples are required for assessing PD-L1 status (IHC22C3 pharmDx from Dako). Primary endpoint is overall survival; and secondary are progression free survival based on RECIST 1.1 criteria, objective response rate, disease control rate, duration of response, and quality of life measured by QLQ-C30 and QLQ-LC13 global scores. This is a superiority study with a hazard ratio of 0.7391, two-sided alpha 5% and power 80%, after 356 events are observed over 500 patients. The first patient was enrolled on 25th January 2016. Enrolment is ongoing in Europe and the US. Clinical trial identification: NCT02654587 Legal entity responsible for the study & Funding: OSE Immunotherapeutics, France

      Conclusion:
      Section not applicable

  • +

    P3.02a - Poster Session with Presenters Present (ID 470)

    • Event: WCLC 2016
    • Type: Poster Presenters Present
    • Track: Advanced NSCLC
    • Presentations: 1
    • +

      P3.02a-036 - Phase 1 Study of Ceritinib 450 mg or 600 mg Taken with a Low-Fat Meal versus 750 mg in Fasted State in ALK+ Metastatic NSCLC (ID 7170)

      14:30 - 14:30  |  Author(s): R. Dziadziuszko

      • Abstract

      Background:
      The anaplastic lymphoma kinase (ALK) inhibitor ceritinib is approved at 750 mg fasted for the treatment of patients with ALK-rearranged (ALK+) metastatic non-small cell lung cancer (NSCLC) pretreated with crizotinib. The pharmacokinetic (PK) part of this study (Part 1) compares PK exposure of ceritinib following food consumption versus a fasted state in advanced ALK+ NSCLC patients.

      Methods:
      Part 1 of this prospective, open-label, multicenter, randomized, 3-arm, phase 1 study (ASCEND-8; NCT02299505) is investigating PK and safety of ceritinib in advanced ALK+ NSCLC patients, treatment-naïve or pretreated with multiple lines of chemotherapy and/or crizotinib. Here, we compare steady-state PK of ceritinib 450 or 600 mg taken with a low‑fat meal versus ceritinib 750 mg fasted (primary endpoint) and report preliminary safety outcomes from Part 1. Part 2 continues to randomize treatment-naïve patients and will assess safety and efficacy.

      Results:
      As of June 16, 2016 (data cut-off), 137 patients were randomized in a 1:1:1 ratio to each treatment arm; 135 patients received one dose (safety set) and 97 patients had evaluable steady-state PK data. Disease characteristics were comparable between arms. Median follow-up duration was 4.14 months (range, 0.1–13.9). Relative to 750 mg fasted, the 450 mg fed arm demonstrated comparable steady-state PK, while the 600 mg fed arm showed ~25% higher steady-state PK (Table). Preliminary safety data suggests overall frequency of AEs and types of AEs were comparable between arms. However, incidences of gastrointestinal (GI)-related AEs (diarrhea, nausea or vomiting) were lowest, with no grade 3/4 GI AEs reported, in the 450 mg fed arm.Figure 1



      Conclusion:
      Steady-state PK was comparable in advanced ALK+ NSCLC patients taking ceritinib 450 mg with a low-fat meal versus 750 mg fasted. This study continues to enroll treatment-naïve patients into Part 2 to assess efficacy across the three treatment arms and assess longer safety follow-up.