Eribulin-trastuzumab combination in HER2-positive metastatic breast cancer: updated results from a Russian observational study

Introduction. The standard of 1st line treatment of HER2+ metastatic breast cancer (mBC) is double blockade with trastuzumab and pertuzumab + taxane, 2nd line – Trastuzumab-emtazine. There are no standards for further treatment, as well as the optimal drug sequence. Expansion of the arsenal of therapeutic possibilities and the use of new combinations will certainly improve the results of treatment of this category of patients and increase their life expectancy.Aim. We sought to describe treatment patterns of  eribulin  and clinical outcomes of  metastatic HER2-positive breast cancer treated with eribulin  plus trastuzumab combination in  academic institutions and community oncology practices across the Russian Federation.Materials and methods. Patients treated with eribulin anytime between Jan, 2014 and Sep, 2019 with a diagnosis of MBC were identified by 23 providers from Russia. Providers retrospectively reviewed the health records and abstracted selected data points into an electronic case report form for each eligible patient.Results. 100 HER2-positive pts received eribulin in combination with trastuzumab. Median age was 55 (31–80) yrs and ECOG status 0–3. 67% pts had visceral metastases. Eribulin was administered as 1st and 2nd line to 23 (23%) pts, 3rd line to 31 (31%) pts, 4th line and later to 46 (46%). Median number of cycles was 5 (2–27). ORR was 12%, SD – 72%, SD > 6 months – 23%, PD – 16%. Clinical efficacy rate achieved in 35%. Median PFS was 5.07 months (95% CI 4.021–6.119). According to the ER-status the response to eribulin and trastuzumab was different. ORR was 18.8%, SD 72.9% in pts with ER-positive MBC (n = 48) and 5.8% and 71.2% respectively in ER-negative MBC (n = 52). Median PFS was 6.97 months (95% CI 3.924–10.016) in pts with ER-positive MBC and 4.67 months (95% CI 3.841–5.499) in ER-negative MBC (р = 0.3). The combination was well tolerated: dose reductions were required in 12% pts, withdrawal due to toxicity in 4% pts. The most common type of toxicity was hematological with neutropenia Gr III-IV in 14 (14%) pts. Peripheral neuropathy Gr III was observed in 5 (5%) pts. No cardiotoxicity was detected.Conclusions. This is the real-life data of clinical outcomes for patients receiving eribulin plus trastuzumab for HER2-positive MBC throughout the Russian Federation. Our experience with eribulin plus trastuzumab demonstrates that this combination may be a potential effective treatment option for HER-2 positive MBC patients

Эффективность и безопасность комбинации ленватиниба и эверолимуса у больных диссеминированным раком почки, прогрессирующим на фоне антиангиогенной т аргетной терапии: результаты российского многоцентрового наблюдательного исследования ROSLERCM

Objective: an assessment of efficacy and safety of lenvatinib in combination with everolimus in unselected patients with metastatic renal cell carcinoma (mRCC) progressed during or following ≥1 line of antiangiogenic targeted therapy.Material. Russian multicenter observational study ROSLERCM included 73 consecutive patients with morphologically verified mRCC progressed during or following ≥1 line of antiangiogenic targeted therapy, treated with lenvatinib (18 mg/d) and everolimus (5 mg/d) in 20 Russian centers. Median age of the patients was 59 (23–73) years, a male-to-female ratio – 3:1. Most common histological type of kidney cancer was clear-cell RCC (71 (95.8 %)). More than 2 lines of previous therapy were administered in 45 (61.6 %) cases. Most patients were diagnosed with multiple metastases (71 (97.3 %)) in >1 site (61 (83.6 %)). Nephrectomy was performed in 87.7 % (64/73) of cases. At the combined therapy start ECOG PS 2–4 was registered in 16 (20.5 %), poor prognosis according to IMDC score – in 33 (45.2 %) patients. Median follow-up was 9.7 (1–26) months.Results. Median progression-free survival achieved 16.9 (95 % confidence intervals (CI) 12.1–20.6), overall survival – 20.8 (95 % CI 15.7–25.9) months. Objective response rate was 11 % (8/73); tumor control was reached in 93.2 % (68/73) of cases. Median objective response duration was 10.5 (4.3–16.8) months, tumor control duration – 10.0 (2.5–17.5) months. Any adverse events developed in 83.6 % (61/73), adverse events grade III–V – in 23.3 % (17/73) of cases. Most frequent AE grade III–IV were diarrhea (10 (13.6 %)) and arterial hypertension (6 (8.2 %)). Unacceptable toxicity demanded treatment cancellation in 4.2 % (3/73), therapy interruption – in 30.1 % (22/73) and dose reduction – in 32.9 % (24/73) of patients.Conclusion. Unselected mRCC patients administered with combined targeted therapy in the real world practice were registered with similar survival, lower objective response rate, and better tolerability comparing with population assigned for lenvatinib plus everolimus in the randomized phase II trial.Цель – оценка эффективности и безопасности комбинации ленватиниба и эверолимуса в российской популяции неотобранных больных распространенным раком почки, прогрессирующим на фоне или после не менее 1 линии антиангиогенной таргетной терапии.Методы. В российское многоцентровое наблюдательное исследование ROSLERCM последовательно включены 73 больных верифицированным диссеминированным раком почки, прогрессирующим на фоне или после ≥1 линии антиангиогенной терапии, получавших ленватиниб (18 мг / сут) с эверолимусом (5 мг / сут) в 20 клинических центрах России. Медиана возраста – 59 лет (23– 73 года), соотношение мужчин и женщин – 3:1. Доминирующим гистологическим типом опухоли был светлоклеточный вариант (71 (95,8 %)). Более 2 линий терапии ранее получали 45 (61,6 %) больных. На момент старта комбинированной таргетной терапии соматический статус ECOG PS 2–4 имел место у 16 (20,5 %), к группе плохого прогноза IMDC относились 33 (45,2 %)больных. В большинстве случаев метастазы были множественными (71 (97,3 %)) и локализовались более чем в 1 органе 61 (83,6 %). Первичная опухоль была удалена у большинства (64 (87,7 %)) пациентов. Медиана наблюдения – 9,7 мес (1–26) мес.Результаты. Медиана беспрогрессивной выживаемости достигла 16,9 (95 % доверительный интервал 12,1–20,6), ОВ – 20,8 (95 % ДИ 15,7–25,9) мес. Частота объективных ответов на лечение составила 11 % (8/73), (медиана длительности – 10,5 (4,3–16,8) мес), контроля над опухолью – 93,2 % (68/73) (медиана длительности – 10,0 (2,5–17,5) месяца). Нежелательные явления развились у 83,6 % (61 / 73) пациентов и достигли III–V степеней тяжести в 23,3 % (17 / 73) случаев. Наиболее частыми нежелательными явлениями III–IV степеней тяжести были диарея (10 (13,6 %)) и артериальная гипертензия (6 (8,2 %)). Непереносимая токсичность послужила поводом для отмены комбинированной таргетной терапии в 4,2 % (3 / 73), перерыва в лечении – в 30,1 % (22 / 73) и редукции дозы ленватиниба – в 32,9 % (24 / 73) случаев.Заключение. У неотобранных больных, получающих лечение в широкой клинической практике, зарегистрирована сопоставимая выживаемость, более низкая частота объективных ответов и лучшая переносимость терапии ленватинибом с эверолимусом по сравнению с результатами регистрационного исследования

Efficacy and safety of lenvatinib in combination with everolimus in metastatic renal cell carcinoma resistant to antiangiogenic targeted therapy: Russian multicenter observational study ROSLERCM

Objective: an assessment of efficacy and safety of lenvatinib in combination with everolimus in unselected patients with metastatic renal cell carcinoma (mRCC) progressed during or following ≥1 line of antiangiogenic targeted therapy.Material. Russian multicenter observational study ROSLERCM included 73 consecutive patients with morphologically verified mRCC progressed during or following ≥1 line of antiangiogenic targeted therapy, treated with lenvatinib (18 mg/d) and everolimus (5 mg/d) in 20 Russian centers. Median age of the patients was 59 (23–73) years, a male-to-female ratio – 3:1. Most common histological type of kidney cancer was clear-cell RCC (71 (95.8 %)). More than 2 lines of previous therapy were administered in 45 (61.6 %) cases. Most patients were diagnosed with multiple metastases (71 (97.3 %)) in >1 site (61 (83.6 %)). Nephrectomy was performed in 87.7 % (64/73) of cases. At the combined therapy start ECOG PS 2–4 was registered in 16 (20.5 %), poor prognosis according to IMDC score – in 33 (45.2 %) patients. Median follow-up was 9.7 (1–26) months.Results. Median progression-free survival achieved 16.9 (95 % confidence intervals (CI) 12.1–20.6), overall survival – 20.8 (95 % CI 15.7–25.9) months. Objective response rate was 11 % (8/73); tumor control was reached in 93.2 % (68/73) of cases. Median objective response duration was 10.5 (4.3–16.8) months, tumor control duration – 10.0 (2.5–17.5) months. Any adverse events developed in 83.6 % (61/73), adverse events grade III–V – in 23.3 % (17/73) of cases. Most frequent AE grade III–IV were diarrhea (10 (13.6 %)) and arterial hypertension (6 (8.2 %)). Unacceptable toxicity demanded treatment cancellation in 4.2 % (3/73), therapy interruption – in 30.1 % (22/73) and dose reduction – in 32.9 % (24/73) of patients.Conclusion. Unselected mRCC patients administered with combined targeted therapy in the real world practice were registered with similar survival, lower objective response rate, and better tolerability comparing with population assigned for lenvatinib plus everolimus in the randomized phase II trial