A phase II study of pazopanib in recurrent or persistent ovarian (EOC), peritoneal (PPC), or Fallopian tube cancer (FTC): A Spanish Ovarian Cancer Group (GEICO) study.

2012 ◽  
Vol 30 (15_suppl) ◽  
pp. 5068-5068 ◽  
Author(s):  
Ana Oaknin ◽  
Antonio Gonzalez-Martin ◽  
Yolanda García ◽  
Silvia Catot ◽  
Cristina Caballero ◽  
...  
Keyword(s):  
Kinase Inhibitor ◽  
Complete Response ◽  
Statistical Hypothesis ◽  
Ca 125 ◽  
Fallopian Tube Cancer ◽  
Significance Level ◽  
Translational Study ◽  
Cancer Group ◽  
Platinum Resistant ◽  
Study Results

5068 Background: Pazopanib (P) is a potent and selective multi-targeted receptor tyrosine kinase inhibitor of VEGFR-1, VEGFR-2, VEGFR-3, PDGFR-a/β, and c-kit that inhibits angiogenesis. Signaling blockade of these pathways is associated with anti-tumor and anti- angiogenesis activity. Methods: Eligible patients (pts) had persistent or recurrent EOC/PPC /FTC up to 2 prior cytotoxic regimens. They had to have received at least a platinum–based line and fulfill platinum resistant criteria. Treatment consisted of P 800 mg orally QD until disease progression or prohibitive toxicity. The primary endpoint was Clinical Benefit Rate (CBR) defined as Complete Response (CR) plus Partial Response (PR) plus Stable Disease (SD) ≥ 8 weeks by RECIST v1.1.An optimal two-stage Simon design was utilized with H1and H0set at 60%and 40% respectively; Power =90% significance level of 5% (Stage 1: = 25pts; total=66). Correlative studies to identify angiogenic biomarkers to predict response to P were performed. Results: From 12/10 to 7/11, 25 pts were enrolled, 21 pts had EOC, 2PPT, and 2FTC. Median age: 64 years (range 43-81), ECOG 0/1/2:12/11/2 pts. Prior chemotherapy regimens 1/2:10/15 pts. Median weeks on treatment: 8 (range 4-25). Most frequent adverse events (AEs) were asthenia (56%), hypertension (36%) and diarrhea, nausea and anorexia (20% each).Grade 3 toxicities: Hypertension (6pts), ALT/AST elevations (3 pts), asthenia (2 pts), DVT (1pt), Fistula (1 pt), Anemia (1 pt). Six pts required dose reduction to 600 mg due to toxicity.Reasons for stopping study treatment: PD (18pts), AEs (3pts) and investigator decision (2pts). First stage analysis showed: PR:1/25, SD: 9/25, CBR:10/25; 40% (95% CI 21.1%-61.3%).No correlation between GCIG CA-125 response and RECIST criteria was established, 8 versus 1 response respectively. Median PFS was 1.83 months (95% CI 1.67-2). Conclusions: The CBR observed at the first stage did not reach the planned statistical hypothesis (CBR:12 pts). Therefore, the lack of activity of P in platinum resistant EOC/PPT/FT led to discontinuation of the study. Translational study results will be presented in an additional abstract.

The combination of intravenous bevacizumab and metronomic oral cyclophosphamide for recurrent platinum-resistant ovarian cancer.

2012 ◽  
Vol 30 (15_suppl) ◽  
pp. 5039-5039
Author(s):  
Emma L. Barber ◽  
Nikki Lynn Neubauer ◽  
Emese Zsiros ◽  
Julian C. Schink
Keyword(s):  
Overall Survival ◽  
Ovarian Carcinoma ◽  
Single Agent ◽  
Progression Free Survival ◽  
Complete Response ◽  
Response To Treatment ◽  
Ca 125 ◽  
Oral Cyclophosphamide ◽  
Free Survival ◽  
Platinum Resistant

5039 Background: This study was undertaken to determine the progression free survival and overall survival in heavily pre-treated patients with recurrent ovarian carcinoma treated with bevacizumab and metronomic oral cyclophosphamide. Methods: An IRB-approved retrospective review was performed for all patients with recurrent ovarian, fallopian tube or primary peritoneal carcinomas treated with intravenous bevacizumab 10mg/kg every 14 days and oral cyclophosphamide 50mg daily between January 2006 and December 2010. Response to treatment was determined by change in disease status according to RECIST criteria and/or CA-125 levels. Results: Sixty-six eligible patients were identified with a median age of 58 years. Fifty-five patients (83%) originally had optimal cytoreduction and all were platinum resistant. Median time from diagnosis to beginning bevacizumab and cyclophosphamide was 36 months. Median number of prior chemotherapy treatments was 7.5 (range 3-16). Eight patients (12.1%) had side effects which required discontinuing bevacizumab and cyclophosphamide, most common were hypertension, proteinuria, and fatigue. There was one bowel perforation (1.5%). A complete response was noted in 7 patients (10.6%), partial response was seen in 21 patients (31.8%) with an overall response rate of 42.4%. Fifteen patients (22.7%) had stable disease and 23 (34.8%) had disease progression. Median progression free survival (PFS) for responders was 5 months (range 2-14) and 11 months (range 4-14) for those with a complete response. Median overall survival (OS) from start of bevacizumab and cyclophosphamide for responders was 20 months (range 2-56) and 9 months (range 1-51) for nonresponders. Conclusions: Bevacizumab and cyclophosphamide is an effective, well-tolerated chemotherapy regimen in heavily pre-treated patients with recurrent ovarian carcinoma which significantly improves PFS and OS in responders. Response rates were significantly better than the rates we have reported in this same group of patients receiving topotecan (22%) or liposomal doxorubicin (25%) and were superior to reported rates for single agent bevacizumab (18%) in patients with only 2-3 prior regimens.

Phase I/II study to evaluate the optimum dose of pegylated-interferon (PEG INTRON) in patients with platinum-resistant ovarian cancer

2007 ◽  
Vol 25 (18_suppl) ◽  
pp. 16010-16010
Author(s):  
P. T. Soliman ◽  
J. B. Gano ◽  
C. F. Levenback ◽  
J. Kavanagh ◽  
D. M. Gershenson ◽  
...  
Keyword(s):  
Ovarian Cancer ◽  
Performance Status ◽  
Pegylated Interferon ◽  
Recurrent Ovarian Cancer ◽  
Ca 125 ◽  
Optimum Dose ◽  
Weekly Schedule ◽  
Interferon Treatment ◽  
Fallopian Tube Cancer ◽  
Platinum Resistant

16010 Background: Intraperitoneal interferon therapy has been shown to have response rates as high as 45% in patients with recurrent ovarian cancer. Continued exposure has also been associated with the effectiveness of interferon treatment. The purpose of this study was evaluate the optimum dose and toxicity profile of PEG INTRON given subcutaneously (SC) on a weekly schedule to women with platinum-resistant ovarian cancer. Methods: Women with platinum-resistant ovarian, peritoneal, or fallopian tube cancer were eligible. Those whose tumors tested positive for IL-8, bFGF, or VEGF were randomized to three PEG INTRON treatment doses, 1.0, 1.25, or 1.5 micrograms/kg/wk SC for a total of 4 weekly injections per cycle. Re-evaluation for tumor response by imaging, physical exam and CA-125 was performed every 2 -3 cycles (8 - 12 weeks). Up to 12 cycles of treatment was allowed. Treatment was continued until progression of disease or unacceptable toxicity. Results: Thirty patients were enrolled, only 17 received treatment; 11 tested negative, 1 refused testing, 1 tested positive but refused treatment. Median age was 56 years (35–73). Of those treated, 94% (16/17) had a performance status of 0. All were heavily pretreated (3–8 prior chemo regimens). One patient received 9 cycles (1.25 micrograms/kg, total dose = 80 mcg) with stable disease. In the remaining 16 patients, 14 (75%) were taken off study due to disease progression; 3 after completing 2 treatment cycles and 11 after <2 treatment cycles. Four patients (24%) discontinued treatment because of toxicity. Two episodes of grade 4 fatigue were reported. Other grade 3 toxicities included visual changes, pain, anemia, neutropenia, depression, myalgia, and nausea/vomiting. Conclusions: There were no clinical responses to weekly PEG INTRON in this patient population. In addition, the regimen was difficult to tolerate. Further investigation into the dose and delivery of PEG INTRON is needed to determine the safety and efficacy of interferon treatment in patients with reuccurent ovarian cancer. No significant financial relationships to disclose.

Final results of a phase II trial of weekly nab-paclitaxel with GM-CSF as chemoimmunotherapy for platinum-resistant epithelial ovarian cancer.

2012 ◽  
Vol 30 (15_suppl) ◽  
pp. 5082-5082
Author(s):  
Ron E. Swensen ◽  
Barbara Ann Goff ◽  
Jennifer Childs ◽  
Doreen Higgins ◽  
Theodore Gooley ◽  
...  
Keyword(s):  
Ovarian Cancer ◽  
Tumor Immunity ◽  
Response Rate ◽  
Complete Response ◽  
High Response Rate ◽  
Time To Progression ◽  
Fallopian Tube Cancer ◽  
Power Estimate ◽  
Gm Csf ◽  
Platinum Resistant

5082^ Background: Ovarian cancer patients with an anti-tumor immune response have a prolonged survival, suggesting that augmenting anti-tumor immunity may be therapeutic. We hypothesized that weekly nab paclitaxel (nabP) followed by GM-CSF may enhance anti tumor immunity and prolong time to progression (TTP). Methods: Eligible subjects had platinum resistant ovarian, primary peritoneal or fallopian tube cancer, and an elevated CA125. Conditional power estimate after 11 subjects showed 22 subjects had 80% power to show a response rate (RR) >21% if the true study RR is 35%. Study end points were RR and TTP. Progression (DP) was doubling of CA125 above the nadir. Complete response (CR) was a decline of CA125 below institutional normal. Partial response (PR) was a decline of >50% from baseline. Stable disease (SD) was all other scenarios. Subjects received nabP, 100mg/m2 days 1,8,15 followed by GM-CSF 250mcg days 16-26 of a 28 day cycle until progression or 6 cycles were complete. Responding subjects received up to 6 more cycles of GM-CSF on days 14-28. Results: 21 subjects received at least one dose of study medications. Median age was 61 (30-91) and had a median of 3 (1-13) prior regimens. Among those completing the study, the median TTP was 132 days vs. 272 days on the prior platinum regimen. 9/21 (43%) had a PR and 4/21 (19%) had a CR. Subjects with a response had a median TTP of 140 days. Assay of serial T-lymphocyte counts against CEA, MUC1, CA125 and tt and influenza controls are planned. Conclusions: Weekly nabP with GM-CSF had manageable toxicity and induced a high response rate (62% by CA125) in patients with platinum resistant ovarian cancer, however this regimen did not prolong the TTP beyond the TTP observed in the prior platinum regimen.

Efficacy and safety of tivozanib in recurrent, platinum-resistant ovarian, fallopian tube or primary peritoneal cancer.

2019 ◽  
Vol 37 (15_suppl) ◽  
pp. 5538-5538 ◽  
Author(s):  
Wendy M Swetzig ◽  
John Robert Lurain ◽  
Emily Berry ◽  
Mario Javier Pineda ◽  
Shohreh Shahabi ◽  
...  
Keyword(s):  
Fallopian Tube ◽  
Kinase Inhibitor ◽  
Progression Free Survival ◽  
Median Number ◽  
Vegf Receptor ◽  
Open Label ◽  
Fallopian Tube Cancer ◽  
Primary Peritoneal Cancer ◽  
Peritoneal Cancer ◽  
Platinum Resistant

5538 Background: Tivozanib is a potent, selective pan-vascular endothelial growth factor (VEGF) receptor tyrosine kinase inhibitor with a long half-life. This study assessed its activity in patients with recurrent, platinum-resistant ovarian cancer (OC), fallopian tube cancer (FTC) or primary peritoneal cancer (PPC). Methods: This open-label phase II study used a Simon’s two-stage design. Eligible patients had recurrent, platinum-resistant OC, FTC or PPC; ECOG PS of 0-1; normal end organ function; and measurable or detectable disease. There was no limit on the number of prior regimens. Treatment consisted of tivozanib 1.5 mg orally once daily (3 weeks on/1 week off). The primary endpoint was response rate. Secondary endpoints were progression-free survival (PFS), overall survival (OS), and toxicity assessment. If 1 partial response (PR) was observed in stage I [n = 12], enrollment proceeded to stage II. The null hypothesis was rejected for ≥ 4 responses in 30 patients. Results: Thirty-one patients were enrolled, and 30 were treated. Twenty-three had OC [76.67%], 5 FTC [16.67%] and 2 PPC [6.67%]. Twenty-six had measurable [86.67%] and 4 detectable disease [13.37%]. The median age was 60, and median number of prior regimens was 4 [range 1-9]. Four PRs [13.33%] were recorded. Twelve patients had stable disease (SD) [40%]. The clinical benefit rate (PR + SD) was 53%. Seven patients [23.33%] survived progression-free for > 6 mos. One patient continued treatment for > 2 yrs. The median PFS was 4 mos [range 1-25] and median OS was 8 mos [range 1-39]. There were no treatment-related deaths. Grade 3-4 related toxicities were hypertension [8], fatigue [3], fistula [2], hyponatremia [2], intestinal perforation, obstruction, stroke, proteinuria, hypomagnesemia, hypoalbuminemia, portal hypertension, nausea and anemia [1 each]. Frequent grade 1-2 related toxicities included fatigue [19], hypertension [13], anorexia [12], arthralgia [11], diarrhea [11], weight loss [10], hoarseness [8], headache [8] and nausea [7]. Exploratory analyses in tumor samples are ongoing. Conclusions: Tivozanib is active in patients with recurrent OC, FTC or PPC, without substantial toxicity, supporting its further development. Clinical trial information: NCT01853644.

Đánh giá kết quả điều trị bệnh nhân ung thư biểu mô buồng trứng tái phát bằng phác đồ paclitaxel tại Bệnh viện K

2021 ◽  
Author(s):  
Thi Lan Nguyen
Keyword(s):  
Ovarian Cancer ◽  
Epithelial Ovarian Cancer ◽  
Sensory Nerve ◽  
Progression Free Survival ◽  
Complete Response ◽  
Recurrent Ovarian Cancer ◽  
Initial Therapy ◽  
Ca 125 ◽  
Free Survival ◽  
Platinum Resistant

TÓM TẮT Đặt vấn đề: Ung thư biểu mô buồng trứng (UTBMBT) là bệnh ác tính của tế bào biểu mô buồng trứng. Bệnh có tiên lượng xấu. Mặc dù điều trị ban đầu tối ưu, UTBMBT sẽ tái phát và cần được điều trị. Điều trị UTBMBT tái phát còn gặp nhiều khó khăn. Nghiên cứu này nhằm đánh giá một số đặc điểm lâm sàng, cận lâm sàng UTBMBT tái phát kháng platinum và kết quả điều trị phác đồ paclitaxel nhóm bệnh nhân này. Phương pháp nghiên cứu: Chúng tôi đưa vào nghiên cứu 65 bệnh nhân được điều trị phác đồ paclitaxel cho ung thư biểu mô buồng trứng tái phát khángplatinum, thỏa mãn các tiêu chuẩn lựa chọn và tiêu chuẩn loại trừ. Với phương pháp nghiên cứu mô tả cắt ngang. Kết quả: Các vị trí tái phát thường gặp nhất là hạch (54,3%), phúc mạc (50%), gan (23,9%). Tăng CA125 ở thời điểm tái phát (77,8%) tỷ lệ đáp ứng chung là 22,5%. Tỷ lệ kiểm soát bệnh (bao gồm đáp ứng hoàn toàn, đáp ứng một phần và bệnh giữ nguyên) đạt 62,5%. Trung vị thời gian sống thêm không tiến triển 26,1 tuần (CI 95%: 20,9 - 28,4). Độc tính trên hệ tạo huyết là giảm bạch cầu đa nhân trung tính độ 1,2. Độc tính trên gan 9,3% chủ yếu tăng men gan độ 1,2. Không có độc tính trên thận. Các tác dụng không mong muốn khác như rụng tóc độ 2: 2,7%, viêm miệng gặp ở 2,1% bệnh nhân, thần kinh cảm giác 15%, chỉ gặp ở độ 1. Có mối liên quan giữa đáp ứng điều trị và nồng độ CA 125. Kết luận: Phác đồ paclitaxel sử dụng điều trị UTBMBT tái phát kháng platinum là phác đồ phù hợp về tính hiệu quả và an toàn cho các bệnh nhân UTBMBT đã trải qua phác đồ hóa trị trước đó. ABSTRACT OUTCOMES OFRECURRENT EPITHELIAL OVARIAN CANCER PATIENTS TREATED WITH PACLITAXEL REGIMEN AT K HOSPITAL Introduction: Epithelial ovarian cancer is a malignant abnormality of the epithelial cell of the ovary. The disease has a poor prognosis. Despite optimal initial therapy, the majority of patients will relapse and require further treatment. Treatment of recurrent ovarian cancer is still challenging. This study aims to describe clinical and subclinical characteristics of patients with platinum - resistant relapsed ovarian carcinoma and evaluate the treatment results of the paclitaxel regimen on these patients. Methods: We enrolled 65 patients with platinum - resistant recurrent epithelial ovarian cancer treated with paclitaxel regimen, met the inclusion and exclusion criteria. Results: The most common recurrent sites were lymph nodes (54.3%), peritoneum (50%), and liver (23.9%). CA125 increased at the time of recurrence (77.8%), the overall response rate was 22.5%. Disease control rates (including complete response, partial response, and stable disease) were achieved at 62.5%. Median progression - free survival was 26.1 weeks (95% CI: 20.9 - 28.4). Hematopoietic system toxicities include neutropenia of grade 1, 2. Hepatotoxicity occupied 9.3%, mainly liver enzymes elevation of grade 1, 2. No renal toxicity was observed. Other undesirable effects include hair loss of grade 2 (2.7%), stomatitis(2.1%), sensory nerve 15% but only grade 1. There was a relationship between treatment response and CA 125 levels. Conclusion: The paclitaxel regimen used to treat platinum - resistant recurrent epithelial ovarian cancer is the appropriate regimen in terms of efficacy and safety. After several lines of chemotherapy regimens. Keywords: Recurrent epithelial ovarian cancer, platinum - resistant, paclitaxel.

scholarly journals Brain Complete Response to Cabozantinib prior to Radiation Therapy in Metastatic Renal Cell Carcinoma

2019 ◽  
Vol 2019 ◽  
pp. 1-4 ◽  
Author(s):  
An Uche ◽  
Chad Sila ◽  
Tad Tanoura ◽  
James Yeh ◽  
Neil Bhowmick ◽  
...  
Keyword(s):  
Renal Cell Carcinoma ◽  
Radiation Therapy ◽  
Cell Carcinoma ◽  
Metastatic Renal Cell Carcinoma ◽  
Renal Cell ◽  
Kinase Inhibitor ◽  
Complete Response ◽  
Heavily Pretreated ◽  
Treatment Paradigm ◽  
Endothelial Growth Factor

Cabozantinib represents an established vascular endothelial growth factor- (VEGF-) tyrosine kinase inhibitor (TKI) in the treatment paradigm of metastatic renal cell carcinoma (mRCC). Its activity in mRCC patients with brain metastases (BMs) has been largely underreported in prospective clinical trials. We present the unique case of a heavily pretreated mRCC patient with BMs who achieved a brain complete response to cabozantinib prior to receiving radiation therapy. We end with a literature review and discussion of the biologic rationale and growing evidence supporting the intracranial activity of cabozantinib.

scholarly journals Knowledge, Attitudes, Behaviors of Women Related to Pregnancy, and Early Childhood Caries Prevention: A Cross-Sectional Pilot Study

2021 ◽  
Vol 12 ◽  
pp. 215013272110133
Author(s):  
Neel Shimpi ◽  
Ingrid Glurich ◽  
Catherine Maybury ◽  
Min Qi Wang ◽  
Kazumasa Hashimoto ◽  
...  
Keyword(s):  
Oral Health ◽  
Pilot Study ◽  
Health Education ◽  
Survey Study ◽  
Cross Sectional Survey ◽  
Cross Sectional ◽  
Health Maintenance ◽  
Significance Level ◽  
Study Results ◽  
And Behaviors

Objective Health education interventions during pregnancy can influence maternal oral health (OH), maternal OH-behaviors and children’s OH. Interventions that can be delivered at anytime and anywhere, for example mobile-health (mHealth) provides an opportunity to address challenges of health education and support activation of women in underserved and rural communities to modify their health behavior. This pilot study was undertaken as a part of a mHealth initiative to determine knowledge, attitudes, and behaviors related to pregnancy and ECC prevention among women attending obstetrics/gynecology (OB/GYN) practices at a large rurally-based clinic. Methods A cross-sectional survey study was voluntarily engaged by women (n = 191) aged 18 to 59 years attending OB/GYN visits, over a 3-week period from 12/2019 to 1/2020. Survey results were analyzed applying descriptive statistics, X2 and Fisher’s Exact tests. The significance level was set at P < .0001 for all analyses. Results Approximately half of respondents were between 18 and 29 years (53%), had a college degree (55%), and 100% reported cell phone use. Whereas 53% and 31%, respectively, indicated that they were “somewhat” or “very” sure of how to prevent ECC in their children, only 9% recognized evidence of early decay and 30% did not know the purpose of fluoride. Overall, only 27% of participants correctly answered the knowledge-based questions. Further, only 57% reported their provider explained things in a way that was easy to understand. Only 24% reported seeing a dentist during their current pregnancy. Conclusions Study results suggested potential gaps in knowledge and behaviors related to ECC prevention and provided baseline data to inform future interventions to improve ECC prevention practices. Notably, majority of participants used their cell phones for making medical/dental appointments and reported using their phones to look up health-related information. This demographic represents a potentially receptive target for mHealth approaches to improve understanding of oral health maintenance during pregnancy and ECC prevention.

Clinical trial in progress: Pivotal study of VB-111 combined with paclitaxel versus paclitaxel for treatment of platinum-resistant ovarian cancer (OVAL, VB-111-701/GOG-3018).

2021 ◽  
Vol 39 (15_suppl) ◽  
pp. TPS5599-TPS5599
Author(s):  
Rebecca Christian Arend ◽  
Bradley J. Monk ◽  
Thomas J. Herzog ◽  
Jonathan A. Ledermann ◽  
Kathleen N. Moore ◽  
...  
Keyword(s):  
Ovarian Cancer ◽  
Clinical Trial ◽  
Antiangiogenic Therapy ◽  
Objective Response ◽  
Phase Iii ◽  
Weekly Paclitaxel ◽  
Ca 125 ◽  
Recist 1.1 ◽  
Platinum Resistant ◽  
Phase Iii Study

TPS5599 Background: Ofranergene obadenovec (VB-111) is a targeted anti-cancer gene therapy with a dual mechanism of action that includes a broad antiangiogenic effect and induction of a tumor directed immune response. A phase II trial in patients with platinum resistant ovarian cancer showed that VB-111 in combination with weekly paclitaxel was well tolerated and associated with a CA-125 Objective Response Rate (ORR) of 58% with a trend for improved survival. The favorable outcomes were associated with induction of an immunotherapeutic effect of tumor infiltration with CD-8 T cells. Based on these observations, a phase III study was initiated in collaboration with the GOG Foundation, Inc. Methods: Study NCT03398655 is an international, randomized, double-blind, placebo-controlled, phase III study. Eligible patients have recurrent platinum-resistant epithelial ovarian cancer with measurable disease (RECIST 1.1), and may have been previously treated with up to 5 prior lines of therapy. Patient are randomized 1:1 to receive VB-111 (1x1013 VPs) with weekly paclitaxel (80mg/m2), or weekly paclitaxel with placebo. Randomization is stratified by number of prior treatment lines, prior antiangiogenic therapy and platinum refractory disease status. The efficacy endpoints are OS, PFS and ORR by RECIST 1.1 and by CA-125 (GCIG criteria). A pre-planned interim analysis was performed by the DSMC in the first 60 patients evaluable for CA-125 response. The analysis met the pre-defined criteria of a CA-125 ORR (GCIG) in the treatment arm at least 10% higher than in the control arm. Study enrolment is ongoing and over 220 patients were enrolled in the US, EU, and Israel. Enrolment of the full sample size of 400 patients is expected to complete by the end of 2021. Clinical trial information: NCT03398655.

Amivantamab in combination with lazertinib for the treatment of osimertinib-relapsed, chemotherapy-naïve EGFR mutant (EGFRm) non-small cell lung cancer (NSCLC) and potential biomarkers for response.

2021 ◽  
Vol 39 (15_suppl) ◽  
pp. 9006-9006
Author(s):  
Joshua Bauml ◽  
Byoung Chul Cho ◽  
Keunchil Park ◽  
Ki Hyeong Lee ◽  
EUN KYUNG CHO ◽  
...  
Keyword(s):  
Kinase Inhibitor ◽  
Progression Free Survival ◽  
Complete Response ◽  
Combination Regimen ◽  
Resistance Mutations ◽  
Tumor Biopsy ◽  
Potential Biomarker ◽  
Treatment Naïve ◽  
Exon 19 Deletion ◽  
Potential Biomarkers

9006 Background: Preliminary efficacy was observed with the combination of amivantamab, an EGFR-MET bispecific antibody, and lazertinib, a 3rd-generation tyrosine kinase inhibitor, in both treatment-naïve and osimertinib (osi)-relapsed patients (pts) with EGFRm NSCLC (Cho Ann Oncol 2020;31:S813). We present updated results of the combination in osi-relapsed pts, including an analysis of potential biomarkers of response. Methods: Pts with EGFR exon 19 deletion or L858R mutation NSCLC, who had progressed on osi without intervening chemotherapy, were enrolled in the combination cohort of the ongoing CHRYSALIS study (NCT02609776). With pre-treatment tumor biopsies and ctDNA collected prospectively, pts received the combination dose of 1050/1400 mg amivantamab + 240 mg lazertinib to assess safety and efficacy in the osi-relapsed population. Response was assessed by investigator per RECIST v1.1. Osi-resistance mutations or amplifications in EGFR/MET identified by next-generation sequencing (NGS) in either ctDNA or tumor biopsy (biomarker-positive [pos]), were evaluated for enriching response. Immunohistochemistry (IHC) staining for EGFR and MET expression was also explored as a potential biomarker for response. Results: Of the 45 osi-relapsed pts, 36% (95% CI, 22–51) had a confirmed response (1 complete response and 15 partial responses [PR]). At a median follow-up of 8.2 mo (1.0–11.8), 20/45 pts (44%) remain on treatment. With 11/16 pts (69%) continuing in response (2.6–9.6+ mo), median duration of response has not been reached (NR). The median progression-free survival (mPFS) was 4.9 mo (95% CI, 3.7–8.3). In total, 44/45 pts were evaluable by ctDNA and 29/45 by tumor NGS. Genetic testing identified 17 biomarker-pos pts, of whom 8 (47%) responded. Of the remaining 28 pts, 8 (29%) responded. Among these 28 pts, 18 had unknown mechanisms of osi-resistance (8 PR) and 10 had non-EGFR/MET mechanisms of resistance identified (none responded). The mPFS (95% CI) for biomarker-pos and remaining pts was 6.7 mo (3.4–NR) and 4.1 mo (1.4–9.5), respectively. Adequate tissue was available for 20 pts to perform IHC testing for EGFR and MET–9/10 (90%) IHC high (combined EGFR+MET H score>400) pts responded to treatment, while 1/10 IHC low pts responded to treatment. Conclusions: Treatment with the combination of amivantamab and lazertinib yielded responses in 36% of chemotherapy-naïve pts who progressed on osi. Among these pts, genetic EGFR and MET-based biomarkers of resistance identified a subgroup of pts more likely to respond to amivantamab and lazertinib, although additional pts lacking identified resistance markers also responded. An IHC-based approach may identify pts most likely to benefit from the combination regimen, but further investigation is warranted. Clinical trial information: NCT02609776.

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