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Maximilian J. Hochmair



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    P1.01 - Advanced NSCLC (ID 158)

    • Event: WCLC 2019
    • Type: Poster Viewing in the Exhibit Hall
    • Track: Advanced NSCLC
    • Presentations: 1
    • Moderators:
    • Coordinates: 9/08/2019, 09:45 - 18:00, Exhibit Hall
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      P1.01-118 - Overall Survival in Pts with EGFRm+ NSCLC Receiving Sequential Afatinib and Osimertinib: Updated Analysis of the GioTag Study (ID 2211)

      09:45 - 18:00  |  Presenting Author(s): Maximilian J. Hochmair

      • Abstract
      • Slides

      Background

      With three generations of EGFR tyrosine kinase inhibitors (TKIs) now available for the treatment of EGFR mutation-positive (EGFRm+) NSCLC, it will be important to identify the optimal sequence of EGFR TKIs to maximise survival. The observational GioTag study (NCT03370770) investigated outcomes in patients with EGFRm+ NSCLC who were treated with sequential afatinib and osimertinib in a ‘real-world’ clinical setting, including patients with poor prognosis (ECOG PS ≥2: 15%; stable brain metastases: 10%).1 Time to treatment failure (TTF) was encouraging (overall: 27.6 months; Del19-positive patients: 30.3 months; Asians: 46.7 months). In this updated analysis, we report OS and updated TTF.

      Method

      Data were retrospectively collected between Dec 2017 and June 2018 for 203 pts with EGFRm+ (Del19, L858R) NSCLC who had T790M-positive disease after first-line afatinib and subsequently received osimertinib. TTF was the primary outcome; OS analysis was exploratory. Data were collected from electronic health records (EHRs; n=126) or medical charts (n=77). For logistical reasons, this interim analysis includes updated data (as at April 2019) from patients with available EHRs (all from USA; n=94); final analysis incorporating updated data from manual chart reviews is anticipated in early 2020.

      Result

      After a median follow-up of 30.3 months, median OS was 41.3 months (90% CI: 36.8–46.3) in the overall dataset (n=203) and 45.7 months (90% CI: 45.3–51.5) in Del19-positive patients (n=149); 80% of patients were alive after 2 years. OS in Asians was immature. Updated median TTF was 28.1 months (90% CI: 26.8–30.3) in the overall dataset, and 30.6 months (90% CI: 27.6–32.0) in Del19-positive patients. Outcomes were not affected by afatinib starting dose. Median TTF with osimertinib was 15.6 months (90% CI: 13.817.1) in the overall dataset, and 16.4 months (90% CI: 14.917.9) in Del19-positive patients.

      Conclusion

      Sequential afatinib and osimertinib is associated with encouraging OS and TTF in pts with EGFR T790M-positive NSCLC, especially in Del19-positive patients, indicating that the sequential regimen is a feasible option in this setting. Of note, prior treatment with afatinib did not preclude prolonged TTF with second-line osimertinib (15.6 months overall; 16.4 months in Del19-positive patients). The final analysis will provide further insights into the long-term OS of patients treated with sequential afatinib–osimertinib, including Asians.

      1. Hochmair MJ, et al. Future Oncol. 2018;14:2861–74.

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    P2.14 - Targeted Therapy (ID 183)

    • Event: WCLC 2019
    • Type: Poster Viewing in the Exhibit Hall
    • Track: Targeted Therapy
    • Presentations: 2
    • Moderators:
    • Coordinates: 9/09/2019, 10:15 - 18:15, Exhibit Hall
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      P2.14-46 - Treatment Observations and Clinical Experience with Lorlatinib in Pretreated ALK and ROS1 Rearranged NSCLC Patients (ID 2524)

      10:15 - 18:15  |  Presenting Author(s): Maximilian J. Hochmair

      • Abstract
      • Slides

      Background

      Patients with non-small cell lung cancer (NSCLC), showing anaplastic lymphoma kinase (ALK)-or proto-oncogene 1 (ROS1)-rearrangement are routinely treated with tyrosine kinase inhibitors (TKIs). Although treatment is usually very effective resistance invariably develops over time. Lorlatinib a third generation TKI was recently approved by the FDA for patients who progressed on crizotinib and at least one other tyrosine kinase inhibitor. Here we report our experience with this novel brain-penetrant TKI.

      Method

      32 NSCLC patients, heavily pretreated with various chemotherapies and TKIs, have been treated with lorlatinib (100mg daily p.o.) as part of a pre-approval access program (PAA) between June 2016 and April 2019 at the Otto-Wagner-Hospital. We collected patient characteristics including sex, age, race and smoking history. Clinical response rates and progression free survival was assessed in all.

      Result

      21 patients were women and 11 men. The overall mean age was 57.3 years (59.2 female/53.2 male). 20 patients were never smokers (62.5%), 7 were former smokers (21.9 %), 2 were active smokers (6.3%). Smoking history was unknown in 3 patients (9.4%). Of the 32 patients 23 were ALK+ and 9 ROS1+. Lorlatinib was given in various lines of treatment from 2nd up to 6th line while one patient even received it in 11th line. All treated patients were Caucasian. Three patients showed a complete response (9.4%), 8 a partial response (25%), 5 are still showing stable disease (15.6%). Disease progression was noted in 16 patients (50%). The mean PFS (progression free survival) was 8.5 months, whilst treatment of 15 patients is still ongoing. ALK+ patients (n=23) showed a mean PFS of 7.9 months and ROS1+ patients (n=9) a mean PFS 9.8 months. Patients receiving brigatinib before switching to lorlatinib reached a mean PFS of 9.4 months (n=13; 12 ALK+/1 ROS1+) while patients who received lorlatinib after alectinib experienced a mean PFS of 4.93 months (n=8 ALK+). After crizotinib we found a mean PFS of 9 months (n=5; 5 ROS1+) and after ceritinib a mean of 10 months (n=6; 3 ALK+/3 ROS1+). The treatment was generally well tolerated.

      Conclusion

      Lorlatinib was overall well tolerated and it was highly effective in these pretreated ALK and ROS1 rearranged NSCLC patients.

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      P2.14-58 - A Phase IIIb, Open-Label Study of Afatinib in Caucasian EGFR TKI-Naïve Patients with EGFRm+ NSCLC: An Interim Analysis (ID 1371)

      10:15 - 18:15  |  Presenting Author(s): Maximilian J. Hochmair

      • Abstract
      • Slides

      Background

      First-line afatinib demonstrated significantly improved median PFS in patients with EGFR mutation-positive (EGFRm+) NSCLC versus chemotherapy in LUX-Lung 3/6 (HR [95% CI]: 0.58 [0.43–0.78]/0.28 [0.20–0.39]), and versus gefitinib in LUX-Lung 7 (0.73 [0.57–0.95]). Since these trials had strict inclusion criteria, it is important to support these findings with real-world studies of broader patient populations. We report interim results of a Phase IIIb study of afatinib treatment for EGFRm+ NSCLC in a patient population similar to real-world practice.

      Method

      EGFR TKI-naïve patients with locally advanced/metastatic EGFRm+ NSCLC, and ECOG PS 0–2, received afatinib 40 mg/day. Dose reduction was permitted (minimum 20 mg/day). Primary endpoint: adverse events (AEs; descriptive fashion). Efficacy was also assessed.

      Result

      At data cut-off (30-April-2018), 479 patients were enrolled and treated (Caucasian/Asian/other: 97%/2%/<1%; ECOG PS 0–1/2: 92%/8%; 1st/2nd/≥3rd-line therapy: 78%/17%/5%; common/uncommon mutations: 87%/13%; brain metastases: 17%). Median time on afatinib: 359 days. Objective response and disease control rates were 46% and 86%, respectively. Other efficacy outcomes are in the Table. The most common grade ≥3 afatinib-related AEs were diarrhoea (16%) and rash (11%). 258 (54%) patients had AEs leading to dose reduction (most frequently diarrhoea [25%]/rash [11%]), and 37 (8%) had TRAEs leading to discontinuation (most frequently diarrhoea [3%]; all others [<1%]). Serious afatinib-related AEs occurred in 39 (8%) patients.

      Median TTSP, months

      (95% CI)

      Median PFS, months

      (95% CI)

      All pts (n=479)

      14.9

      (13.8–17.6)

      13.4

      (11.8–14.5)

      Line of therapy

      1st (n=374)

      15.6

      (14.1–18.5)

      13.8

      (12.6–15.2)

      2nd (n=81)

      14.7

      (11.3–20.6)

      13.2

      (8.3–17.7)

      ≥3rd (n=24)

      8.1

      (3.7–14.4)

      6.6

      (3.2–12.6)

      Baseline brain metastases*

      No (n=395)

      15.8

      (14.1–18.8)

      13.9

      (12.7–15.5)

      Yes (n=83)

      13.7

      (9.7–17.2)

      10.1

      (8.2–13.9)

      Baseline mutation type*

      Common (n=416)

      15.9

      (14.5–19.1)

      14.1

      (13.0–15.7)

      Uncommon (n=62)

      6.7

      (5.4–8.3)

      5.9

      (4.0–7.4)

      Baseline ECOG PS*, including age

      01 (n=442)

      15.8
      (14.4–18.8)

      13.8
      (12.8–15.2)

      <65 years (n=221)

      14.7
      (12.7–17.6)

      13.4
      (11.6–15.5)

      65 years (n=221)

      18.9
      (14.7–21.7)

      14.1
      (12.6–16.4)

      2 (n=36)

      8.9
      (5.7–13.2)

      6.2
      (2.5–11.6)

      <65 years (n=16)

      6.0
      (2.4–13.2)

      3.2
      (1.5–9.1)

      65 years (n=20)

      9.9
      (7.6–13.9)

      7.7
      (5.7–13.9)

      *Missing (n=1); Del 19 and/or L858R with or without uncommon mutation; Includes, n (%, of those with uncommon mutations): ex 20 ins: 37 (60), T790M: 12 (19), G719S/A/C: 12 (19), L861Q: 10 (16), S768I: 9 (15). TTSP, time to symptomatic progression; PFS, progression-free survival

      Conclusion

      This interim analysis indicated predictable and manageable safety, and encouraging efficacy, with afatinib in a broad patient population. The high proportion of patients with tumours harbouring exon 20 insertions may account for the differences in TTSP/PFS by common/uncommon mutation subgroup. Independent of treatment line, median TTSP/PFS in patients with ECOG PS 0–1 (LUX-Lung trials’ inclusion criteria) was 15.8/13.8 months, and, notably, was 18.9/14.1 months in those also aged ≥65 years. These findings by ECOG PS/age are consistent with those of the LUX-Lung trials.

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    PL02 - Presidential Symposium including Top 7 Rated Abstracts (ID 89)

    • Event: WCLC 2019
    • Type: Plenary Session
    • Track:
    • Presentations: 1
    • Now Available
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      PL02.11 - Overall Survival with Durvalumab Plus Etoposide-Platinum in First-Line Extensive-Stage SCLC: Results from the CASPIAN Study (Now Available) (ID 2265)

      08:00 - 10:15  |  Author(s): Maximilian J. Hochmair

      • Abstract
      • Presentation
      • Slides

      Background

      Extensive-stage (ES)-SCLC is a recalcitrant disease associated with a median OS of ~10 months following etoposide-platinum (EP); new treatments that prolong survival are needed. CASPIAN (NCT03043872) is an open-label, phase 3 study of durvalumab (anti-PD-L1), ± tremelimumab (anti-CTLA-4), combined with EP as first-line treatment for patients with ES-SCLC. Here we report results for durvalumab + EP (D+EP) versus EP from a planned interim analysis.

      Method

      Patients with previously untreated ES-SCLC (ECOG PS 0/1) were randomised (1:1:1) to durvalumab 1500 mg + EP q3w; durvalumab 1500 mg + tremelimumab 75 mg + EP q3w; or EP q3w. Patients in immunotherapy arms received up to 4 cycles of EP followed by maintenance durvalumab until progression. Patients in the EP arm received up to 6 cycles of EP and prophylactic cranial irradiation (PCI), at the investigator’s discretion. Investigator’s choice of cisplatin or carboplatin was allowed across all arms and was a stratification factor at randomisation. The primary endpoint was OS. Data cutoff: 11 March 2019.

      Result

      268 patients were randomised to D+EP and 269 to EP. Baseline characteristics were well balanced between arms. In the EP arm, 56.8% of patients received 6 cycles of EP. At the interim analysis, D+EP significantly improved OS compared to EP with a HR of 0.73 (95% CI, 0.591-0.909; p=0.0047); mOS 13.0 versus 10.3 months, respectively. 33.9% of patients were alive at 18 months with D+EP versus 24.7% with EP. Secondary endpoints of PFS and ORR were also improved with D+EP compared to EP: PFS HR 0.78 (95% CI, 0.645-0.936); mPFS 5.1 versus 5.4 months; 12-month PFS rate 17.5% versus 4.7%; investigator-assessed ORR (RECIST v1.1; unconfirmed) 79.5% versus 70.3% (odds ratio, 1.64 [95% CI, 1.106-2.443]). The incidences of grade 3/4 AEs (61.5% versus 62.4%) and AEs leading to discontinuation (9.4% each) were similar between arms; the incidence of haematological toxicities was numerically higher in the EP arm. The durvalumab + tremelimumab + EP arm continues blinded to final analysis.

      Conclusion

      The addition of durvalumab to EP as first-line treatment for ES-SCLC significantly improved OS (27% reduction in risk of death) versus a robust control arm that permitted up to 6 cycles of EP and PCI. Of note, this chemo-immunotherapy regimen offers flexibility in platinum choice (carboplatin or cisplatin), reflecting current clinical practice for this challenging disease. No new safety signals were identified.

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