Clinicopathologic and genomic correlates of tumor-infiltrating immune cells and immunotherapy efficacy in NSCLC.

9121 Background: Tumor-infiltrating immune cells and PD-L1 expression are associated with improved clinical outcomes in patients (pts) with NSCLC treated with immune checkpoint inhibitors (ICIs). However, as tumor-infiltrating immune cells are not a well-established biomarker for NSCLC, further data are needed to integrate and identify clinicopathological and genomic factors that influence the tumor microenvironment. Methods: We collected clinicopathologic and genomic data from pts with NSCLC who underwent multiplexed immunofluorescence. Uniform Manifold Approximation and Projection (UMAP) was used to identify distinct immunophenotypic clusters according to the number of intratumoral PD-1+ immune cells (ICs), CD8+, and Foxp3+ T cells, as well as PD-L1 on tumor and immune cells. An unbiased recursive partitioning (URP) algorithm was used to investigate an optimal cluster with respect to objective response rate (ORR) in the subset of pts treated with ICIs. Results: Among 304 pts, UMAP identified 5 clusters: PD-L1-high with high vs low CD8+ and PD-1+ ICs (clusters A & B, respectively); PD-L1-low with high vs low CD8+ and PD-1+ ICs (clusters C & D respectively); PD-L1-low and moderate levels of CD8+ and PD-1+ ICs (cluster E). Clinicopathological characteristics of the clusters shown in Table. URP analysis identified immune rich clusters A and C as optimal responders to ICIs. From the start of ICIs, we observed a significantly higher ORR (53.3% vs 4.3%; P<0.001), a significantly longer median progression-free survival (mPFS 25.6 vs 3.7 months; HR: 0.12 [95% CI: 0.05-0.32]; P<0.001), and longer median overall survival (mOS 45.1 vs 22.3 months; HR: 0.25 [95% CI: 0.1-0.68]; P=0.006) in clusters A + C (N=15) vs other clusters (N=23). After adjusting for other variables such as performance status, histology, presence of oncogenic driver mutation, and line of treatment, clusters A + C were significantly associated with improved mPFS (HR: 0.08 [95% CI: 0.03-0.24], P<0.001) and mOS (HR: 0.11 [95% CI: 0.03-0.40], P<0.001). Conclusions: Incorporation of multiplex immunofluorescence may improve prediction of response and resistance to immunotherapy in NSCLC.[Table: see text]

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Clinicopathologic, genomic, and tumor microenvironment correlates of aneuploidy and immunotherapy outcomes in NSCLC.

Journal of Clinical Oncology ◽

10.1200/jco.2021.39.15_suppl.9119 ◽

2021 ◽

Vol 39 (15_suppl) ◽

pp. 9119-9119

Author(s):

Joao Victor Machado Alessi ◽

Biagio Ricciuti ◽

Yvonne Y. Li ◽

Hersh Gupta ◽

Giuseppe Lamberti ◽

...

Keyword(s):

Immune Cells ◽

Checkpoint Inhibitors ◽

Performance Status ◽

Recursive Partitioning ◽

Objective Response ◽

Stage Iv ◽

Progression Free Survival ◽

Tumor Stroma ◽

Continuous Variables ◽

Targeted Next Generation Sequencing

9119 Background: Cancer aneuploidy, an unbalanced number of chromosomes, is associated with somatic mutation rate, expression of proliferative genes, and altered immune signaling. Whether aneuploidy correlates to a distinct immunophenotype or impacts clinical outcomes to immune checkpoint inhibitors (ICIs) in NSCLC is unclear. Methods: In NSCLCs which underwent targeted next-generation sequencing, we retrospectively analyzed the aneuploidy score (AS), defined as the sum of the number of altered chromosome arms. An unbiased recursive partitioning (URP) algorithm was used to investigate an AS cutoff to discriminate responders from non-responders to ICIs. Multiplexed immunofluorescence to quantify CD8+, Foxp3+, PD-1+, and PD-L1 expression was performed to determine differences in tumor immune cells subsets according to AS cutoff. Results: Among 436 NSCLCs identified, stage I tumors (median AS 1) had significantly lower median AS (mAS) than stage IV cancers (mAS 7, P < 0.001), stage III (mAS 4, P = 0.03), and numerically lower compared to stage II cancers (mAS 3, P = 0.18). We found no difference in the mAS across tumors with a PD-L1 tumor proportion score of ≥50%, 1-49%, or < 1% (mAS 5 vs 7 vs 6, respectively, P = 0.26), nor was there any correlation between aneuploidy and TMB when taken as continuous variables (Spearman R: 0.074, P = 0.12). A total of 279 advanced NSCLCs with available aneuploidy scores were treated with ICIs. An URP analysis identified an AS of 2 as the strongest discriminator of objective response to ICI. Compared to pts with an AS > 2 (N = 207, 74.2%), pts with AS ≤2 (N = 72, 25.8%) had a significantly higher objective response rate (ORR 43.0% vs 19.8%, P < 0.001), a significantly longer median progression-free survival (mPFS 6.2 vs 2.9 months, HR: 0.70 [95% CI: 0.52-0.94], P = 0.02), and a significantly longer median overall survival (mOS 19.8 vs 13.8 months, HR: 0.66 [95% CI: 0.47-0.94], P = 0.02) to treatment with ICIs. After adjusting for other variables such as performance status, presence of oncogenic driver mutation, PD-L1, TMB, and line of treatment, AS was significantly associated with improved mPFS (HR: 0.72 [95% CI: 0.52-0.99], P = 0.04) and mOS (HR: 0.64 [95% CI: 0.44-0.94], P = 0.02). By contrast, among pts who received first-line platinum doublet chemotherapy without ICI, an AS ≤2 (N = 29), when compared to an AS > 2 (N = 56), did not correlate with improved ORR (55.2% vs 44.6%, P = 0.4) or PFS (5.3 vs 4.8 months, HR 0.83 [95% CI: 0.5-1.3], P = 0.43). Among 179 NSCLCs profiled by multiplex immunofluorescence, compared to cancers with an AS > 2, those with low aneuploidy had significantly higher numbers of CD8+, Foxp3+, PD-1+ immune cells, and PD-1+ CD8+ T cell, both intratumorally and when looking at the total numbers of cells within the tumor and at the tumor-stroma interface. Conclusions: NSCLCs with low aneuploidy have a distinct immune microenvironment and more favorable outcomes to ICIs.

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Salvage Ipilimumab and Nivolumab in Patients With Metastatic Renal Cell Carcinoma After Prior Immune Checkpoint Inhibitors

Journal of Clinical Oncology ◽

10.1200/jco.19.03315 ◽

2020 ◽

Vol 38 (27) ◽

pp. 3088-3094 ◽

Cited By ~ 4

Author(s):

Anita Gul ◽

Tyler F. Stewart ◽

Charlene M. Mantia ◽

Neil J. Shah ◽

Emily Stern Gatof ◽

...

Keyword(s):

Renal Cell Carcinoma ◽

Targeted Therapy ◽

Immune Checkpoint ◽

Immune Checkpoint Inhibitors ◽

Response Rate ◽

Checkpoint Inhibitors ◽

Objective Response ◽

Progression Free Survival ◽

Free Survival ◽

Metastatic Rcc

PURPOSE Immune checkpoint inhibitors (ICIs) are standard therapy in metastatic renal cell carcinoma (RCC). The safety and activity of the combination of ipilimumab and nivolumab in patients who have received prior ICI targeting the programmed death 1 (PD-1) pathway remains unknown. We evaluated ipilimumab and nivolumab in patients with metastatic RCC after prior treatment with anti–PD-1 pathway–targeted therapy. PATIENTS AND METHODS Patients with metastatic RCC who received prior anti–PD-1 pathway-targeted therapy and subsequently received ipilimumab and nivolumab were reviewed. Objective response rate and progression-free survival per investigator assessment were recorded. Toxicity of ipilimumab and nivolumab was also assessed. RESULTS Forty-five patients with metastatic RCC were included. All patients (100%) received prior ICIs targeting the PD-1 pathway. The median age was 62 years (range, 21-82 years). At a median follow-up of 12 months, the objective response rate to ipilimumab and nivolumab was 20%. The median progression-free survival while on ipilimumab and nivolumab was 4 months (range, 0.8-19 months). Immune-related adverse events (irAEs) of any grade with ipilimumab and nivolumab were recorded in 29 (64%) of the 45 patients; grade 3 irAEs were recorded in 6 (13%) of the 45 patients. CONCLUSION Ipilimumab and nivolumab demonstrated antitumor activity with acceptable toxicity in patients with metastatic RCC who had prior treatment with checkpoint inhibition.

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Phase II study of pemetrexed (Pem) and cisplatin (Cis) plus cetuximab (Cet) followed by Pem and Cet maintenance therapy in patients (Pts) with advanced nonsquamous non-small cell lung cancer (NSCLC).

Journal of Clinical Oncology ◽

10.1200/jco.2012.30.15_suppl.7554 ◽

2012 ◽

Vol 30 (15_suppl) ◽

pp. 7554-7554

Author(s):

Gerald Schmid-Bindert ◽

Vittorio Gebbia ◽

Frank Mayer ◽

Edurne Arriola ◽

Diego Marquez-Medina ◽

...

Keyword(s):

Survival Rate ◽

Performance Status ◽

Objective Response ◽

Stage Iv ◽

Study Drug ◽

Progression Free Survival ◽

Free Survival ◽

Secondary Endpoints ◽

Grade 3 ◽

One Year

7554 Background: A prospective, nonrandomized, multicenter study was conducted to assess the effect of adding cet to pem and cis in pts with advanced nonsquamous NSCLC. Methods: 113 Caucasian performance status 0-1 pts received 1st line pem (500 mg/m2) and cis (75 mg/m2) on day 1 (21d cycle) for 4-6 cycles and cet (400 mg/m2 loading dose followed by 250 mg/m2) weekly. Non-progressive pts received pem 500 mg/m2 on day 1 (21d cycle) plus cet (250mg/m2 weekly) until progression. Pts received vitamin B12/folic acid and dexamethasone. Primary endpoint was objective response rate (ORR) (RECIST 1.0). Secondary endpoints were progression free survival (PFS), 1 year survival rate, translational research (TR) and safety. Results: Pts’ characteristics: median age 59.7 years, 64% male, 50% PS 0, 92% stage IV, and 78% adenocarcinoma. All pts completed ≥ 1 cycle of induction therapy and 45% and 43% completed ≥ 1 cycle of maintenance with pem and cet, respectively. ORR (n=109) was 38.5% (80% CI 32.2-45.1), all partial responses. Disease control rate (response/stable disease) was 59.6% (80% CI: 53.1-65.9). Median PFS was 5.82 months (80% CI: 4.40-6.70). One year survival rate was 0.45 (80% CI: 0.39-0.51). Significant associations were seen between high EGFR by IHC and increased PFS (cytoplasm: HR=0.46, p=0.035; membrane: HR=0.41, p=0.008), and between high nuclear TTF-1 and increased ORR (OR=7.73, p=0.021) / PFS (HR=0.21, p<0.001) / OS (HR=0.25, p=0.035). Of 113 pts evaluated for safety, 73 (64.6%) pts had drug related CTC Grade 3/4 adverse events (AE): most frequent were neutropenia (14.2%), rash (15%), and vomiting (8.8%). Drug related serious AEs were reported in 27.4% pts: most frequent were anemia (5.3%), neutropenia (5.3%), vomiting (3.5%), and rash, renal failure, diarrhea and fatigue (1.8% each). There were 2 potential on-study drug related deaths (sudden death and large intestinal perforation). Conclusions: Pem, cis and cet appeared efficacious and tolerable. These results support further evaluation in a randomized trial. The TR outcomes are hypothesis generating given the study’s size and nonrandomized nature.

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Circulating tumor DNA (ctDNA) in metastatic melanoma (MM) patients (pts) with brain metastases (mets).

Journal of Clinical Oncology ◽

10.1200/jco.2019.37.15_suppl.9581 ◽

2019 ◽

Vol 37 (15_suppl) ◽

pp. 9581-9581

Author(s):

Jenny HJ Lee ◽

Alexander M. Menzies ◽

Matteo S. Carlino ◽

Richard Kefford ◽

Richard A. Scolyer ◽

...

Keyword(s):

Checkpoint Inhibitors ◽

Objective Response ◽

Detection Threshold ◽

Progression Free Survival ◽

Circulating Tumor Dna ◽

Brain Response ◽

Free Survival ◽

Best Response ◽

Droplet Pcr ◽

Extracranial Disease

9581 Background: Brain mets are common in pts with MM, occurring in up 50% of pts. Serial ctDNA levels at baseline and early on therapy predict objective response (OR) and overall survival (OS) in MM pts without brain mets receiving immune checkpoint inhibitors (ICI). The predictive utility in pts with brain mets is unknown. Methods: BRAF/NRAS ctDNA at baseline and early on ICI therapy (week 3-8) was analysed using mutation specific digital droplet PCR (detection threshold 2.5 copies/ml plasma) in MM pts with brain mets. Intracranial (IC) and extracranial (EC) disease volume (sum of product of diameters of ALL mets [SPD]) and OR, progression-free survival (PFS) and OS were analyzed. Results: 48 pts with brain mets were studied, 40 with concurrent EC disease (SPD EC med 892mm2 [25-22417mm2], IC med 200mm2 [9-1487mm2]) and 8 with isolated IC mets (SPD med 150mm2 [66-1035mm2]). At baseline, ctDNA was detectable in 28 (58%) pts, 28/40 (70%) with IC + EC mets and 0/8 with isolated IC mets. Baseline ctDNA reflected EC disease volume (Pearson’s r = 0.4, p = 0.01) but not IC volume (r = 0.1, p = 0.5). Baseline ctDNA did not associate with IC or EC OR or PFS, however, undetectable ctDNA was associated with superior OS (HR 0.4, p = 0.01). Early on therapy, ctDNA predicted EC response but not IC response; EC OR was 65% if ctDNA undetectable and 6% if detectable (p < 0.01), IC OR was 35% if undetectable and 12% if detectable (p = 0.1). Nevertheless, undetectable ctDNA early on therapy was associated with a superior PFS (HR 0.3, p < 0.01) and OS (HR 0.2, p < 0.01), indicating survival is largely determined by extracranial disease activity. In the 8 pts with IC disease only, 7/8 had disease progressive disease as best response. 1/8 subsequently developed detectable ctDNA at week 12, with multiple new EC mets seen at first restaging scan at this time. Conclusions: ctDNA does not appear to be a useful biomarker for detecting brain mets nor monitoring brain response in melanoma pts receiving ICI. This has important implications when using ctDNA in the setting of surveillance in the metastatic and adjuvant setting.

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Efficacy of first-line immune checkpoint inhibitors in patients with sarcomatoid and/or rhabdoid (S/R) metastatic renal cell carcinoma (mRCC).

Journal of Clinical Oncology ◽

10.1200/jco.2019.37.8_suppl.66 ◽

2019 ◽

Vol 37 (8_suppl) ◽

pp. 66-66

Author(s):

Ziad Bakouny ◽

Sarah Abou Alaiwi ◽

Amin Nassar ◽

John A. Steinharter ◽

Xiao X. Wei ◽

...

Keyword(s):

Immune Checkpoint ◽

Immune Checkpoint Inhibitor ◽

Checkpoint Inhibitors ◽

Objective Response ◽

Multivariable Analysis ◽

Progression Free Survival ◽

First Line ◽

Free Survival ◽

Logistic Regressions

66 Background: Patients with mRCC with S/R components tend to have a poor prognosis with few therapeutic options available. Recent data suggest that immune checkpoint inhibitor (ICI)-based therapies may be especially effective for these patients. Our aim was to evaluate the efficacy of ICI-based therapies in patients with S/R mRCC. Methods: We retrospectively assessed objective response rate (ORR), progression free survival (PFS) & overall survival (OS) of patients with S/R mRCC treated at our institution with first-line ICI-based therapies and compared these to those of patients treated with first-line non-ICI-based therapies. Univariable and multivariable (adjusted for IMDC group) Cox and logistic regressions were performed. Results: 92 patients (70 S, 9 R, and 13 S&R) patients were included, of which 74 with a clear-cell component. For all patients (regardless of therapy), 74 (80.4%) patients experienced a PFS event (progression or death) and 52 (56.5%) died at 25.3 months (m) median follow-up. Overall median PFS was 5.3 m (95% CI= 3.4–7.2) and 24 m OS rate was 39.5% (27.4–51.7). Out of 78 patients in whom response was evaluable, ORR was 30.8% (20.4–41.2). Patients treated with ICI-based therapies had significantly better ORR, PFS, and OS on multivariable analysis (table). Conclusions: mRCC patients with S/R components have significantly better ORR, PFS, and OS with first-line ICI-based compared to non-ICI-based therapies. These data support the use of ICI-based therapies for patients with S/R mRCC. [Table: see text]

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Advanced chondrosarcomas: Role of chemotherapy and survival.

Journal of Clinical Oncology ◽

10.1200/jco.2012.30.15_suppl.10023 ◽

2012 ◽

Vol 30 (15_suppl) ◽

pp. 10023-10023

Author(s):

Binh Bui Nguyen ◽

Angela Cioffi ◽

Sophie Piperno-Neumann ◽

Loic Chaigneau ◽

François Bertucci ◽

...

Keyword(s):

Performance Status ◽

Objective Response ◽

Pegylated Liposomal Doxorubicin ◽

Progression Free Survival ◽

Best Supportive Care ◽

Progression Rate ◽

Free Survival ◽

Investigational Drugs ◽

Metastatic Sites

10023 Background: There are no data about the role of chemotherapy in patients with advanced chondrosarcomas. Methods: From 2000 to 2011, 98 patients with a confirmed diagnosis of advanced chondrosarcomas were referred to one of the 8 participating institutions, and their medical records reviewed. Results: Median age was 46 years (range 16-82). The most frequent histological subtype was conventional chondrosarcoma (n=60, 61%). 83 patients (85%) had metastatic disease ( lung n=71, bone n=23, liver n=6) and 15 patients (15%) had locoregional unresectable disease. 30 patients (31%) had ≥ 2 metastatic sites. 63 patients (64%) received 1st-line combination agent chemotherapy. 70 patients (71%) received a 1st-line anthracycline-containing regimen (doxorubicin + cisplatin +/- ifosfamide: n=30, doxorubicin or pegylated liposomal doxorubicin: n=18, doxorubicin + ifosfamide +/- dacarbazine: n=16, others= 6). RECIST objective response was observed in 14 patients (14%), all but two treated with anthracyclines. 30 patients (31%) had stable disease > 6 months. Median progression-free survival (PFS) and overall survival (OS) were 5.3 months (95% CI: 2.8-7.7) and 19 months (95% CI: 14-24) respectively. Performance status (PS) ≥ 2 was the sole factor significantly associated with OS. Conclusions: Chemotherapy is associated with a 6-month non-progression rate of about 45% in patients with advanced chondrosarcoma. Best supportive care should be considered in patients with poor PS. These data should be used as a reference for response and outcome in the assessment of investigational drugs in advanced chondrosarcoma.

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Analysis of predictive factors of ramucirumab plus paclitaxel for advanced gastric cancer.

Journal of Clinical Oncology ◽

10.1200/jco.2017.35.4_suppl.185 ◽

2017 ◽

Vol 35 (4_suppl) ◽

pp. 185-185

Author(s):

Naoki Fukuda ◽

Daisuke Takahari ◽

Hiroki Osumi ◽

Tomohiro Matsushima ◽

Izuma Nakayama ◽

...

Keyword(s):

Gastric Cancer ◽

Advanced Gastric Cancer ◽

Predictive Factors ◽

Performance Status ◽

Objective Response ◽

Progression Free Survival ◽

Independent Factor ◽

Ecog Performance Status ◽

Free Survival ◽

Gastric Cancer Patients

185 Background: Ramucirumab (RAM) is a novel anti-VEGF antibody approved in 2015 in Japan. Predictive factors for RAM in combination with paclitaxel (PTX) remain largely unknown. Methods: We reviewed 77 consecutive advanced gastric cancer patients who were treated with RAM plus PTX between June 2015 and June 2016 in our institution. We evaluated treatment outcome and analyzed potential predictive factors by univariate and multivariate analyses. Results: Median age was 67 years (range 35-83) and 51 % of the patients were male. The ECOG performance status (PS) was ≥ 2 in 8 patients. 89% (69/77) patients were treated as second line chemotherapy. Objective response rate (ORR) in patients who have measurable disease was 52 % (17/33). Median progression free survival (PFS) and overall survival (OS) and was 6.0 months (95% confidence interval [CI] = 4.3-7.1) and 10.4 months (95% CI 6.8-13.6), respectively. The most frequent adverse events were peripheral neuropathy (44%), G3 ≥ neutropenia (34%), hypertension (32%) and bleeding (27%). At multivariate analysis, hypertension was independent factor for OS (Hazard ratio [HR] = 0.35, 95% CI = 0.14-0.90, P = 0.03). Also, bleeding (HR = 0.23, 95% CI = 0.09-0.55, P = 0.001) was independent factor for PFS and hypertension (HR = 0.47, 95% CI = 0.22-1.02, P = 0.06) had trend toward to show better PFS. Conclusions: RAM plus PTX showed promising efficacy for advanced gastric cancer. RAM related toxicities such as hypertension and bleeding/hemorrhage were independent factors for better outcome. Further investigation is warranted to verify our analysis.

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Immune Checkpoint Inhibitors in Advanced Acral Melanoma: A Systematic Review

Frontiers in Oncology ◽

10.3389/fonc.2020.602705 ◽

2020 ◽

Vol 10 ◽

Author(s):

Qingyue Zheng ◽

Jiarui Li ◽

Hanlin Zhang ◽

Yuanzhuo Wang ◽

Shu Zhang

Keyword(s):

Systematic Review ◽

Combination Therapy ◽

Objective Response Rate ◽

Median Overall Survival ◽

Response Rate ◽

Checkpoint Inhibitors ◽

Objective Response ◽

Progression Free Survival ◽

Therapeutic Effects ◽

Free Survival

IntroductionAcral melanoma (AM) has different biological characteristics from cutaneous melanoma. Although systemic therapeutic strategies for advanced AM resemble those for advanced cutaneous melanoma, the evidence of the clinical use of immune checkpoint inhibitors (ICIs) for AM is still inadequate. We aimed to systematically analyze the therapeutic effects and safety profile of ICI treatments in advanced AM.MethodsThis systematic review was conducted in line with a previously registered protocol. Three electronic databases, conference abstracts, clinical trial registers, and reference lists of included articles were searched for eligible studies. The primary outcomes were therapeutic effects, and the secondary outcomes were the safety profiles.ResultsThis systematic review included six studies investigating anti-CTLA-4 immunotherapy, 12 studies investigating anti-PD-1 immunotherapy, one study investigating the combination therapy of anti-CTLA-4 and anti-PD-1, and one study investigating anti-PD-1 immunotherapy in combination with radiotherapy. In most studies investigating ipilimumab, the anti-CTLA-4 antibody, the objective response rate ranged from 11.4 to 25%, the median progression-free survival ranged from 2.1 to 6.7 months, and the median overall survival was more than 7.16 months. For studies discussing anti-PD-1 immunotherapy with nivolumab, pembrolizumab, or JS001, the objective response rate ranged from 14 to 42.9%, the median progression-free survival ranged from 3.2 to 9.2 months, and the median overall survival was more than 14 months. The combination therapy of anti-CTLA-4 and anti-PD-1 immunotherapy showed better efficacy with an objective response rate of 42.9% than single-agent therapy. The retrospective study investigating the combination therapy of anti-PD-1 immunotherapy and radiation showed no overall response. Few outcomes regarding safety were reported in the included studies.ConclusionsICIs, especially anti-CTLA-4 monoclonal antibodies combined with anti-PD-1 antibodies, are effective systematic treatments in advanced AM. However, there remains a lack of high-level evidence to verify their efficacy and safety and support their clinical application.

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Efficacy of Regorafenib in Metastatic Colorectal Cancer: A Multi-institutional Retrospective Study

Clinical Medicine Insights Oncology ◽

10.1177/1179554918825447 ◽

2019 ◽

Vol 13 ◽

pp. 117955491882544 ◽

Cited By ~ 5

Author(s):

Ali Aljubran ◽

Mahmoud A Elshenawy ◽

Magdy Kandil ◽

Muhammed N Zahir ◽

Ahmed Shaheen ◽

...

Keyword(s):

Colorectal Cancer ◽

Overall Survival ◽

Metastatic Colorectal Cancer ◽

Kinase Inhibitor ◽

Performance Status ◽

Objective Response ◽

Eastern Cooperative Oncology Group ◽

Prognostic Significance ◽

Progression Free Survival ◽

Free Survival

Background: Regorafenib is a multi-kinase inhibitor approved for treatment of refractory advanced colorectal cancer. It was found in the clinical trials to have a modest benefit and significant toxicity. Our aim was to assess the outcome in our local clinic practice. Patients and methods: Records of patients with confirmed colorectal cancer treated with regorafenib were reviewed. Clinical, pathological, and molecular data were collected. Efficacy and factors of possible prognostic significance were analyzed. Results: A total of 78 patients with metastatic colorectal cancer were treated with regorafenib from February 2014 to February 2016 in 4 different institutions (median age: 50.5 years; male: 40 [51.3%]; KRAS mutant: 41 [52%]; right colonic primary: 18 [23%]). A total of 52 patients (66.7%) had Eastern Cooperative Oncology Group (ECOG) Performance Status of 0 to 1, whereas in 25 patients (32.1%) it was >1. In total, 58 patients (74%) had dose reduction. No patient achieved objective response, 15 patients (19%) achieved stable disease, and 56 patients (72%) had progressive disease. With a median follow-up of 6.5 months, the median progression-free survival was 2.8 months (95% confidence interval [CI], 2.5-3.3) and overall survival was 8.0 months (95% CI, 6.2-9.7). Only performance status of ⩽1 had a statistically significant impact on progression-free survival and overall survival in both univariate and multivariate analyses. Conclusions: Regorafenib in our clinical practice has equal efficacy to reported data from pivotal registration trials. Our data suggest that performance status is the most important prognostic factor in patients treated with regorafenib, suggesting a careful selection of patients.

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Nomogram to assess survival benefit of new over historical agents as salvage therapy for metastatic urothelial carcinoma (mUC) in non-randomized trials.

Journal of Clinical Oncology ◽

10.1200/jco.2017.35.15_suppl.e16012 ◽

2017 ◽

Vol 35 (15_suppl) ◽

pp. e16012-e16012

Author(s):

Guru Sonpavde ◽

Gregory Russell Pond ◽

Jonathan E. Rosenberg ◽

Toni K. Choueiri ◽

Joaquim Bellmunt ◽

...

Keyword(s):

Prognostic Factors ◽

Salvage Therapy ◽

Checkpoint Inhibitors ◽

Performance Status ◽

Progression Free Survival ◽

Phase 2 ◽

Free Survival ◽

Phase Ii Studies ◽

Metastatic Urothelial Carcinoma ◽

The Impact

e16012 Background: Surrogate endpoints of benefit in mUC phase 2 salvage therapy trials are necessary to identify promising drugs, particularly for checkpoint inhibitors where response and progression-free survival are inadequate. We developed a nomogram using prognostic variables from phase 2 trials of historical agents to estimate 12 month survival to which observed survival in phase 2 trials could be compared. Methods: Data were obtained from phase 2 trials of salvage therapy for mUC for survival and 5 prognostic factors: hemoglobin, performance status, liver metastasis, treatment-free interval and albumin. Patients (pts) were randomly allotted to discovery:validation (DIS:VAL) datasets in a 2:1 ratio. A nomogram was developed for estimating 12-month survival. Calibration plots were constructed in the VAL dataset by plotting estimated vs. observed 12-mo survival and data bootstrapped to assess performance. The nomogram was applied to external nonrandomized salvage therapy data: 1) retrospective pemetrexed data or 2) trials of atezolizumab: PCD4989g and IMvigor210. Results: Data were available from 340 pts receiving sunitinib (n = 77), everolimus (n = 45), docetaxel + vandetanib or placebo (n = 109), pazopanib (n = 42), paclitaxel (n = 36) and docetaxel (n = 31). Calibration and prognostic ability of the model was acceptable (c-index = 0.634, 95% CI = 0.596-0.652). Observed 12-month survival for pts on pemetrexed (n = 127, 23.5% [95% CI: 16.2%-31.7%]) were similar to nomogram-predicted survival (19% [95% CI: 16.5-21.5], P> 0.05), while observed result with atezolizumab (n = 403, 39.0% [95% CI: 34.1-43.9]) exceeded predicted result (24.6% [95% CI: 23.4-25.8], P< 0.001). Conclusions: Atezolizumab was associated with a significantly longer 12-mo survival compared to nomogram-predicted survival while pemetrexed was not. This nomogram incorporates baseline prognostic factors to provide expected 12-mo survival of phase 2 patient cohorts with which to compare observed survival, providing a useful tool to quantify benefit in phase II studies while controlling the impact of clinical variables.

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