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Background Talactoferrin alfa is an oral dendritic cell (DC)-mediated immunotherapy (DCMI). We tested whether talactoferrin was superior to placebo in advanced non-small-cell lung cancer (NSCLC). Patients and methods An FORTIS-M trial was an international, multicenter, randomized, double-blind comparison of talactoferrin (1.5g p.o. BID) versus placebo BID, in patients with stage IIIB/IV NSCLC whose disease had failed two or more prior regimens. Treatment was administered for a maximum of five 14-week cycles. The primary efficacy end point was overall survival (OS); secondary end points included 6- and 12-month survival, progression-free survival (PFS), and disease control rate (DCR). Results Seven hundred and forty-two patients were randomly assigned (2:1) to talactoferrin (497) or placebo (245). The median OS in the intent-to-treat (ITT) population was 7.66 months in the placebo arm and 7.49 months in the talactoferrin arm [hazard ratio (HR), 1.04; 95% CI, 0.873–1.24; P = 0.6602]. The 6-month survival rates were 59.9% (95% CI, 53.4% to 65.8%) and 55.7% (95% CI, 51.1% to 59.9%), respectively. The 12-month survival rates were 32.2% (95% CI, 26.3% to 38.2%) and 30.9% (95% CI, 26.8% to 35%), respectively. The median PFS rates were 1.64 months and 1.68 months, respectively (HR, 0.99; 95% CI, 0.835–1.16; P = 0.8073). The DCRs were 38.4 and 37.6%, respectively [stratified odds ratio (OR), 0.96; 95% CI, 0.698–1.33; P = 0.8336]. The safety profiles were comparable between arms. Conclusions There was no improvement in efficacy with talactoferrin alfa in patients with advanced NSCLC whose disease had failed two or more previous regimens.

Contains fulltext : 154081.pdf (Publisher’s version ) (Closed access) OBJECTIVE: Talactoferrin alfa is a recombinant form of the human glycoprotein, lactoferrin, which has been shown to have a wide range of effects on the immune system. This phase II/III clinical trial compared talactoferrin with placebo, in addition to standard of care, in patients with severe sepsis. DESIGN: Multicenter, randomized, placebo-controlled, phase II/III clinical study. SETTING: Seventy-seven centers in 10 countries. PATIENTS: Adult (> 18 yr) patients admitted to one of the participating centers with severe sepsis who were receiving antimicrobial therapy and able to take liquid medication by mouth or feeding tube. INTERVENTIONS: Patients were randomized to receive either talactoferrin (1.5 g, 15 mL) or placebo three times a day orally or by another enteral route for 28 days or until ICU discharge. MEASUREMENTS AND MAIN RESULTS: The study was terminated after 305 patients had been enrolled (153 talactoferrin and 152 placebo) because of futility and safety concerns identified by the Data Safety Monitoring Board. There were no significant differences between groups in baseline characteristics including age, sex, site of infection, and severity scores. Twenty-eight-day mortality was higher in talactoferrin-treated patients although this difference was not statistically significant (24.8% vs 17.8% placebo; p = 0.117). The difference was largely the result of differences in patients with shock (talactoferrin, 33/105 [31.4%] vs placebo, 21/104 [20.2%]; p = 0.064); no mortality difference was seen in patients without shock (talactoferrin, 5/48 [10.4%] vs placebo, 6/48 [12.5%]; p = 0.806). In-hospital (43/153 [28.1%] vs 27/152 [17.8%]; p = 0.037) and 3-month (46/153 [30.1%] vs 31/152 [20.4%]; p = 0.036) mortality rates were significantly higher in talactoferrin-treated patients than in patients in the placebo group. The occurrence of treatment-related adverse or serious adverse events was similar between groups. CONCLUSIONS: Administration of oral talactoferrin was not associated with reduced 28-day mortality in patients with severe sepsis and may even be harmful.

Purpose: We evaluated safety and activity of talactoferrin, a novel immunomodulatory protein in a phase IB trial of patients with refractory solid tumors. Methods: Thirty-six patients with metastatic cancer who had progressed on, or were ineligible for, standard chemotherapy received single-agent oral talactoferrin. Following dose-escalation, with no DLTs , patients were randomized to 4.5 or 9 g/day talactoferrin. Results: Talactoferrin was well tolerated with apparent anti-cancer activity, particularly in NSCLC and RCC. One patient had a PR (RECIST) and 17 patients (47%) had stable disease (50% disease control rate). Median PFS in the twelve NSCLC and seven RCC patients was 4.2 and 7.3 months, respectively. There was no apparent difference in anti-tumor activity or adverse events between talactoferrin doses. Conclusions: Oral talactoferrin was well tolerated. Although evaluated in a small number of patients, talactoferrin appeared to have anti-cancer activity, particularly in NSCLC and RCC and should be evaluated further.

7569 Background: Talactoferrin alfa (TLF), a novel immunomodulatory agent, has demonstrated anti-tumor activity in two randomized, placebo-controlled phase II studies in NSCLC, including a 100-pati...

7540 Background: Talactoferrin alfa (TLF), an immunomodulatory protein with a novel anti-cancer mechanism of action, was active preclinically and in non-small cell lung cancer (NSCLC) patients in Phase 1b studies. Randomized Phase 2 studies in NSCLC were conducted with TLF as a single agent and combined with chemotherapy. The 110-patient combination therapy study, which was previously presented (ASCO 2006, #7095), met its primary endpoint with an improved BOR over chemotherapy alone. We now present results from the placebo- controlled single agent study. Methods: 100 Stage IIIB/IV NSCLC patients who had progressed after first or second line therapy were enrolled at 10 leading Indian cancer centers, and randomized to receive best supportive care plus either oral TLF (1.5 g bid) or placebo. TLF/placebo was administered until disease progression, for up to three 14-week cycles (12 weeks on, 2 weeks off), in a centrally monitored trial. The primary endpoint was overall survival (OS) with 80% power to detect an improvement in median OS with an a=0.05. Results: All patients had previously received a 1st line platinum based regimen; 26 also received 2nd line therapy. The TLF and placebo arms enrolled 47 and 53 patients, respectively. Baseline characteristics were similar in both groups, including proportion of patients receiving 1 or 2 prior regimens. All patients were included in the Intent To Treat (ITT) analysis. The trial met its primary endpoint with a 55% increase (2.1 month; p [Table: see text] [Table: see text]

7095 Background: Talactoferrin alfa (TLF) is an oral immunomodulatory protein with a novel mechanism. TLF showed preclinical anti-cancer activity alone and in combination with chemotherapy. In Phase I/II trials, TLF was safe with apparent single-agent anti-cancer activity in non-small cell lung cancer (NSCLC). Methods: 110 chemo-naive patients with advanced or metastatic NSCLC were randomized (1:1) in a multi-center trial to carboplatin/paclitaxel (C/P) therapy plus either TLF or placebo. Starting the day after C/P (C:AUC 5 mg/mL/min; P:175 mg/m2) in chemo-cycles 1, 3 and 5, oral TLF (1.5 g BID) or placebo was administered in 35-day cycles for up to three cycles or until progression. Primary endpoint was Confirmed Response Rate (RR; PR+CR) by CT using RECIST. Secondary endpoints included Progression Free Survival (PFS) and Overall Survival (OS). Results: Baseline patient and disease characteristics were comparable in both groups. All 110 patients were included in the Intent To Treat (ITT) population. 100 patients with at least one CT scan after starting treatment were prospectively defined as the Evaluable population. Adding oral TLF to C/P enhanced efficacy on all endpoints examined including RR, PFS and OS. Confirmed RR in the 100 evaluable patients significantly increased from 29% to 47% (P = 0.05). Confirmed RR in the 110 ITT patients improved from 27% to 42% (P = 0.08). Median PFS in both evaluable and ITT patients improved by 2.8 months (67%). Median OS improved by 31% and 18% in evaluable and ITT patients, respectively. A landmark analysis comparing survival in patients with and without a PR showed a significant difference (P < 0.01), suggesting a strong association between RR and survival. TLF appeared to be very safe and well tolerated with no drug-related SAEs. Fewer AEs were observed in the TLF arm than in the placebo arm, 346 and 432 AEs, respectively (P = 0.0023). The number of Grade 3/4 AEs was also lower in the TLF arm, 60 versus 91 (P = 0.0144). Conclusions: Adding oral TLF to standard C/P chemotherapy in NSCLC was safe and increased efficacy in a randomized, multi-center, double-blind, placebo-controlled trial, with apparent improvements in RR, PFS and OS. Results with TLF compare favorably to other anti-cancer agents. Oral TLF will be further evaluated in a Phase III trial. [Table: see text]

14648 Background: Talactoferrin alfa (talactoferrin) is a novel, orally administered immunomodulatory protein with demonstrated anti-cancer activity in preclinical experiments. Methods: Talactoferrin’s safety and efficacy in cancer patients was evaluated in a Phase I/II trial. Patients with metastatic disease who had failed standard therapy were treated with single-agent oral talactoferrin. Tumors were measured by CT scan using RECIST criteria. Talactoferrin’s mechanism of action was evaluated in preclinical experiments in tumor-bearing immunocompetent BALB/c and knockout mice. Cytokine levels were measured by ELISA. Cellular changes were measured by FACS analysis and immunofluorescence. Results: Seven patients with metastatic RCC who had failed previous systemic therapy were treated with oral, single-agent talactoferrin. Talactoferrin was safe and very well tolerated without a single drug-related SAE. All seven patients achieved at least Stable Disease, with one patient showing a deep and sustained partial response (71% shrinkage by RECIST two years after start of therapy). There was an apparent increase in median PFS to 7.3 months, with two patients still progression free after two years. Median OS has not yet been reached. In experiments conducted to define its anti-cancer mechanism, orally administered talactoferrin was found to act at the gut and the Gut Associated Lymphoid Tissue (GALT). Talactoferrin induced the chemotaxis of immune cells to intestinal Peyer’s Patches in mice, initiating an immunostimulatory cascade in the GALT and activating both innate and adaptive immunity. We observed significantly increased numbers of Dendritic Cells, NK-T cells and CD8+ T-lymphocytes in small intestinal Peyer’s patches, a systemic increase in Natural Killer (NK) and Cytotoxic T-lymphocyte (CTL) activity, activation of tumor draining lymph nodes, and cellular infiltration of distant tumors. The critical role of NK-T and CD8+ cells was demonstrated in knockout and depletion experiments. Conclusions: Talactoferrin, a first-in-class molecule with apparent clinical anti-cancer activity in RCC, acts through a novel immunomodulatory mechanism of action. [Table: see text]