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Maximilian Johannes Hochmair
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P1.01 - Advanced NSCLC (Not CME Accredited Session) (ID 933)
- Event: WCLC 2018
- Type: Poster Viewing in the Exhibit Hall
- Track:
- Presentations: 1
- Moderators:
- Coordinates: 9/24/2018, 16:45 - 18:00, Exhibit Hall
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P1.01-28 - Impact of Afatinib Dosing on Safety and Efficacy Real-World in Patients with EGFR Mutation-Positive Advanced NSCLC (ID 13276)
16:45 - 18:00 | Author(s): Maximilian Johannes Hochmair
- Abstract
Background
Tolerability-guided dose adjustment of afatinib reduced incidence and severity of adverse drug reactions (ADRs) without affecting efficacy in the LUX-Lung (LL) studies in patients with EGFR mutation-positive (EGFRm+) NSCLC. We evaluated the impact of modifying the recommended starting dose of afatinib (40mg) on efficacy and safety in a real-world setting.
a9ded1e5ce5d75814730bb4caaf49419 Method
This non-interventional, observational, multi-country/site study used medical records of TKI-naïve patients with EGFRm+ (Del19/L858R) NSCLC treated with first-line afatinib. Primary outcomes were % patients with ADRs by severity, time on treatment (TT), and time to progression (TTP), relative to LL3. Secondary outcomes were % of patients with/reasons for modified starting dose.
4c3880bb027f159e801041b1021e88e8 Result
228 patients from 13 countries were included. Baseline characteristics were generally similar to LL3, but with more Del19 patients (78% vs 49%) and fewer Asian patients (44% vs 72%); 12% had ECOG PS 2–3. 31% of patients received an afatinib starting dose of <40 mg; 20% of patients starting with <40 mg increased their dose during the study. 67% of 40 mg starters underwent dose reductions, with 86% of those occurring in the first 6 months. Dose reductions were more frequent in females, Eastern Asian patients, and those with lower body weight. The main reason for dose modification was ADRs. In <40 mg starters, overall ADR incidence was similar to that in ≥40 mg starters, with fewer G3 (17% vs 25%) and no G4 ADRs. There were no new safety signals, and fewer ≥G3 ADRs and serious adverse events (SAEs) than in LL3 (28% vs 49% and 5% vs 14%, respectively). >60% of patients received medications to treat diarrhea and manage skin AEs. Median TT and TTP were 18.7 months and 20.8 months, respectively, and were not impacted by reduced starting dose or dose modification (19.4/17.7/19.5 and 25.9/20.0/29.0 months for patients who started on ≤30 mg/reduced to <40 mg/remained on ≥40 mg, respectively). The efficacy of afatinib was demonstrated across all patient subgroups analysed (ECOG PS 0/1 vs 2/3, age <75 yrs vs ≥75 yrs, EGFR mutational status); TT and TTP were significantly longer in patients with ECOG PS0/1 versus PS2/3.
8eea62084ca7e541d918e823422bd82e Conclusion
As in pivotal trials, dose adjustments with afatinib in real-world practice reduced the frequency and intensity of ADRs without impacting efficacy. RealGido demonstrated long TT/TTP regardless of afatinib dose adjustment or reduced starting dose, and an acceptable safety profile. The results highlight the benefit of tailoring afatinib dose based on individual patient characteristics and ADRs to optimize outcomes.
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P2.13 - Targeted Therapy (Not CME Accredited Session) (ID 962)
- Event: WCLC 2018
- Type: Poster Viewing in the Exhibit Hall
- Track:
- Presentations: 1
- Moderators:
- Coordinates: 9/25/2018, 16:45 - 18:00, Exhibit Hall
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P2.13-03 - Real-Life Experience with Brigatinib in Pretreated EML4-ALK Translocated NSCLC Patients (ID 13703)
16:45 - 18:00 | Presenting Author(s): Maximilian Johannes Hochmair
- Abstract
Background
Patients with lung cancer, who show EML4-ALK translocation are routinely treated with ALK inhibitors (ALKi) as Alectinib, Ceritinib or Crizotinib, but develop resistance over time in the majority of cases. Brigatinib, a new next-generation ALKi, is FDA approved in crizotinib-refractory ALK-positive NSCLC. The role of Brigatinib after Ceritinib or Alectinib failure is unknown in clinical practice. We report about our experience with Brigatinib in EML4-ALK translocated NSCLC patients, who became resistant to Alectinib, Ceritinib or Crizotinib.
a9ded1e5ce5d75814730bb4caaf49419 Method
We treated 35 EML4-ALK translocated NSCLC patients with Brigatinib. Patient characteristics including sex, age, race, presence/ absence of brain metastases and smoking history of ALK+ NSCLC patients were collected. All data were obtained from Otto-Wagner hospital from August 2015 until April 2018.
Before receiving Brigatinib, the patients were either only treated with Crizotinib (n = 15), with Crizotinib and then Ceritinib (n = 12), with Alectinib (n=1), with Crizotinib and then Alectinib (n=3), with Crizotinib, then Ceritinib and then Alectinib (n=1) or with Ceritinib and Alectinib (n=3).
All patients were treated with daily dose of 180 mg oral Brigatinib after a 7- day lead- in at 90 mg.
4c3880bb027f159e801041b1021e88e8 Result
27 patients were women and 8 men. 3 patients were smokers ( 8,5%), 9 were former smokers ( 25,7 %) and 23 were never smokers (65,7%). 13 patients had initial brain metastases (31%). 34 of the treated patients are Caucasians and 1 is Asian. 3 of the 35 showed a complete response (9%), 25 a partial response (76%) and 5 a disease progression (15%), 2 were not evaluable. 7 of the 13 patients with brain metastases responded to Brigatinib (54%). The median PFS (progression free survival) was 7.5 months (range 1-21) and treatment of 21 patients is still ongoing. Of the 15 patients, who received only Crizotinib before Brigatinib, 2 patients were complete responders, 12 were partial responders and 1 had disease progression. Of the 12 patients, who received Crizotinib followed by Ceritinib, 1 patient had a complete response, 9 partial response and 2 disease progression. All other patients demonstrated a partial response except two, who had disease progression with Brigatinib following Ceritinib/ Alectinib treatment. Brigatinib was well tolerated overall.
8eea62084ca7e541d918e823422bd82e Conclusion
Brigatinib was highly effective in these pretreated EML4-ALK translocated NSCLC patients in clinical practice.
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PL02 - Presidential Symposium - Top 5 Abstracts (ID 850)
- Event: WCLC 2018
- Type: Plenary Session
- Track: Advanced NSCLC
- Presentations: 2
- Moderators:
- Coordinates: 9/25/2018, 08:15 - 09:45, Plenary Hall
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PL02.03 - Brigatinib vs Crizotinib in Patients With ALK Inhibitor-Naive Advanced ALK+ NSCLC: First Report of a Phase 3 Trial (ALTA-1L) (ID 11155)
08:30 - 08:40 | Author(s): Maximilian Johannes Hochmair
- Abstract
- Presentation
Background
Brigatinib has robust efficacy in crizotinib-resistant ALK+ NSCLC, exhibiting median progression-free survival (mPFS) of 16.7 months. We report results of the first interim analysis from the ALTA-1L study of brigatinib vs crizotinib in ALK TKI-naive, ALK+ NSCLC (NCT02737501).
This open-label, multicenter study enrolled patients with stage IIIB/IV ALK+ NSCLC based on local ALK testing (FDA approved/other). Eligible patients had ECOG PS 0–2, ≤1 prior systemic therapy for locally advanced/metastatic NSCLC, and no prior ALK inhibitor. Asymptomatic CNS metastases were allowed. All patients had systematic CNS imaging. Patients were randomized 1:1 to brigatinib 180 mg QD with 7-day lead-in at 90 mg or crizotinib 250 mg BID. Primary endpoint: blinded independent review committee (BIRC)-assessed PFS (RECIST v1.1). Secondary efficacy endpoints included BIRC-assessed objective response rate (ORR), intracranial ORR (iORR), and intracranial PFS (iPFS). Interim analyses were planned at 50% and 75% of planned PFS events (n=198).
275 patients were randomized (brigatinib/crizotinib, n=137/138); median age (years) 58/60. 26%/27% received prior chemotherapy for advanced disease, and 29%/30% had baseline brain metastases. At data cut-off (19 February 2018), median follow-up brigatinib/crizotinib: 11.0/9.25 months; with 99 PFS events, brigatinib met the prespecified threshold for statistical superiority vs crizotinib in the primary endpoint, BIRC-assessed PFS (HR 0.49, 95% CI 0.33–0.74, log-rank P=0.0007); brigatinib mPFS was not reached (95% CI NR–NR) vs crizotinib 9.8 months (95% CI 9.0–12.9). Investigator-assessed PFS HR 0.45 (95% CI 0.30–0.68), log-rank P=0.0001. Table shows additional efficacy data. Most common treatment-emergent AEs grade ≥3: brigatinib: increased CPK (16.2%), increased lipase (13.2%), hypertension (9.6%); crizotinib: increased ALT (9.5%), AST (5.8%), and lipase (5.1%). Any grade ILD/pneumonitis: brigatinib, 3.7%; crizotinib, 2.2%. Discontinuations due to AE (brigatinib/crizotinib): 11.8%/8.8%.
Brigatinib showed a statistically and clinically significant improvement in PFS compared with crizotinib in ALK inhibitor–naive ALK+ NSCLC.
BIRC-Assessed Endpoint, % Brigatinib
(n=137)
Crizotinib
(n=138)
P-Value All patients ORRa 76 (68–83b) 73 (65–80b) Confirmed ORR 71 (62–78b) 60 (51–68b) 0.0678 With any intracranial CNS metastases (n=43) (n=47) iORRa 79 (64–90b) 23 (12–38b) Confirmed iORR 67 (51–81b) 17 (8–31b) <0.0001 Median iPFS, months NR (11–NRb) 6 (4–9b) 1-year iPFS 67 (47–80b) 21 (6–42b) HR 0.27 (0.13–0.54) <0.0001c With measurable intracranial CNS metastases (n=18) (n=21) iORRa 83 (59–96b) 33 (15–57b) Confirmed iORR 78 (52–94b) 29 (11–52b) 0.0028 aResponse, ≥1 assessment; b95% CI; cLog-rank.
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PL02.07 - IMpower 133: Primary PFS, OS and Safety in a PH1/3 Study of 1L Atezolizumab + Carboplatin + Etoposide in Extensive-Stage SCLC (ID 12892)
09:00 - 09:10 | Author(s): Maximilian Johannes Hochmair
- Abstract
- Presentation
Background
First-line (1L) standard-of-care treatment for extensive-stage small cell lung cancer (ES-SCLC) is platinum (carboplatin or cisplatin) with etoposide. Despite high initial response rates, there has been limited progress in the last two decades and outcomes remain poor with a median overall survival (OS) of ~10 months. IMpower133 (NCT02763579), a global Phase 1/3, double-blind, randomized, placebo-controlled trial evaluated efficacy and safety of adding atezolizumab, a humanized monoclonal anti–PD-L1 antibody, or placebo to 1L carboplatin and etoposide in ES-SCLC.
Patients with measurable (RECIST v1.1) ES-SCLC, ECOG performance status 0 or 1, who had not received prior systemic treatment for ES-SCLC were enrolled. PD-L1 immunohistochemical testing was not required. Patients were randomized 1:1 to receive four 21-day cycles of carboplatin (AUC 5 mg/mL/min IV, Day 1) plus etoposide (100 mg/m2 IV, Days 1-3) with either atezolizumab (1200 mg IV, Day 1) or placebo, followed by maintenance therapy with atezolizumab or placebo until intolerable toxicity or progressive disease per RECIST v1.1. Patients meeting predefined criteria could receive treatment beyond progression. Co-primary endpoints were OS and investigator-assessed progression-free survival (PFS). Adverse events (AEs) were graded per NCI-CTCAE v4.0. Blood-based tumor mutation burden (bTMB) was assessed using prespecified cutoffs of ≥16 vs. <16 and ≥10 vs. <10 mutations/Mb.
In total, 201 patients were randomized to the atezolizumab group, and 202 to the placebo group. Median follow-up was 13.9 months. Median OS was 12.3 months in the atezolizumab group and 10.3 months in the placebo group (hazard ratio [HR] 0.70 [95% confidence interval (CI): 0.54, 0.91; P=0.0069]). Median PFS was 5.2 months and 4.3 months, respectively (HR 0.77 [95% CI: 0.62, 0.96; P=0.017]). OS and PFS benefits were consistent across key patient subgroups. Investigator-assessed confirmed objective response rates were 60.2% and 64.4% in the atezolizumab and placebo groups, respectively; median duration of response, 4.2 and 3.9 months. Exploratory analyses showed OS survival benefits in subgroups above and below prespecified bTMB cutoffs. Grade 3-4 treatment-related AEs were reported in 56.6% vs. 56.1% patients in atezolizumab vs. placebo groups, respectively; serious treatment-related AEs occurred in 22.7% and 18.9% patients, respectively.
Addition of atezolizumab to carboplatin and etoposide provided a significant improvement in OS and PFS in 1L ES-SCLC in an all-comer patient population. No unexpected safety signals were identified. Atezolizumab plus carboplatin and etoposide may represent a new standard regimen for patients with untreated ES-SCLC.
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