scholarly journals Interim Analysis of an Open-Label, Ascending-Dose, Phase 1 Study of the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of Single Doses of the Subcutaneously Administered Human Monoclonal Antibody Pozelimab in Combination with Single Doses of the Subcutaneously Administered siRNA Cemdisiran in Healthy Volunteers

Blood ◽  
2021 ◽  
Vol 138 (Supplement 1) ◽  
pp. 1998-1998
Author(s):  
Tavé van Zyl ◽  
Jonathan Weyne ◽  
Umesh Chaudhari ◽  
Olivier Harari ◽  
Oren Levy ◽  
...  
Keyword(s):  
Healthy Volunteer ◽  
Interim Analysis ◽  
Healthy Subjects ◽  
Stock Options ◽  
Low Dose ◽  
Phase 1 ◽  
High Dose ◽  
Open Label ◽  
Complement Inhibition ◽  
Privately Held

Abstract Introduction. Pozelimab (REGN3918) and cemdisiran (ALN-CC5) are C5 inhibitors under development for the treatment of paroxysmal nocturnal hemoglobinuria (PNH), myasthenia gravis (MG), and other diseases in which tissue damage is mediated by terminal complement pathway activity. Pozelimab is a fully human monoclonal immunoglobulin G4P (IgG4P) antibody directed against C5, and cemdisiran is a synthetic small interfering RNA (siRNA) targeting C5 mRNA. Both agents can be administered via subcutaneous (SC) injection. Pharmacokinetic (PK)/pharmacodynamic (PD) modeling based on observed data from both pozelimab and cemdisiran healthy volunteer studies (NCT03115996, NCT02352493) suggests that, by combining cemdisiran and pozelimab, the dose of both agents may be significantly reduced and the interval for SC dosing of pozelimab may be significantly increased. Objectives. To provide initial safety and tolerability data for a SC cemdisiran/pozelimab combination approach. Methods. This is an ongoing phase 1, open-label, parallel-dose cohort combination study (NCT04601844) assessing the safety and tolerability of ascending doses of SC pozelimab in combination with SC cemdisiran when administered on the same day or sequentially, on different days, in healthy subjects. Cohort Descriptions. Three parallel ascending-dose cohorts, consisting of six subjects each, were selected based on PK/PD modeling using observed data from both pozelimab and cemdisiran non-combination healthy volunteer studies: Cohort 1: Cemdisiran low dose SC followed by pozelimab low dose SC, administered on different days Cohort 2: Cemdisiran high dose SC followed by pozelimab low dose SC, administered on different days Cohort 3: Cemdisiran high dose SC and pozelimab high dose SC, both administered on the same day Dose regimens were designed to limit the duration of >50% complement inhibition for no longer than 8 weeks, to mitigate risk in the enrolled healthy subjects. An optional additional Cohort 4 was included in the study design and this interim analysis was planned to review safety data to guide the decision regarding whether to enroll this cohort and to inform its dose selection. Interim Analysis: An interim safety analysis was performed with a data cut-off corresponding to study day 127 for Cohort 1, study day 85 for Cohort 2, and study day 71 for Cohort 3. Eighteen healthy volunteer subjects, nine female and nine male, with a mean age of 36 years (standard deviation 9.5 years), were randomized to one of the three cohorts. Demographic and baseline characteristics were comparable for subjects in each cohort. A total of 47 treatment emergent adverse events (TEAEs) were reported, with comparable distribution across cohorts, all mild to moderate in severity with no severe TEAEs. "Nervous system disorders" was the TEAE System Organ Class with the most subjects for all three cohorts, occurring in 12 (66.7%) of the 18 subjects. "Headache" was the most frequent MedDRA Preferred Term for all three cohorts, occurring in 11 (61.1%) of the 18 subjects. All TEAEs were recovered or recovering at the time of data cut-off, and there were no study drug discontinuations or interruptions of treatment due to TEAEs. There were no serious TEAEs or deaths. There were no clinically meaningful findings or treatment-emergent changes reported on the vital signs or laboratory safety tests. Conclusions: The combined SC administration of pozelimab and cemdisiran represents a promising approach to achieve therapeutically significant complement inhibition for extended durations. An interim safety analysis demonstrated that the combined administration was generally safe and well tolerated. Final PK/PD analysis from this healthy volunteer study will allow for assessment of agreement between modeling predictions and observed data, and further inform combination dose regimens for studies in target patient populations. Disclosures van Zyl: Regeneron Pharmaceuticals, Inc.: Current Employment. Weyne: Regeneron Pharmaceuticals, Inc.: Current Employment, Current holder of stock options in a privately-held company. Chaudhari: Regeneron Pharmaceuticals, Inc.: Current Employment, Current holder of stock options in a privately-held company. Harari: Regeneron Pharmaceuticals, Inc.: Current Employment, Current holder of stock options in a privately-held company. Levy: Regeneron Pharmaceuticals, Inc.: Current Employment, Current holder of stock options in a privately-held company. Miller: Regeneron Pharmaceuticals, Inc.: Current Employment, Current holder of stock options in a privately-held company. Chen: Regeneron Pharmaceuticals, Inc.: Current Employment, Current holder of stock options in a privately-held company. Meagher: Regeneron Pharmaceuticals, Inc.: Current Employment, Current holder of stock options in a privately-held company. Rodgers: Regeneron Pharmaceuticals, Inc.: Current Employment, Current holder of stock options in a privately-held company. Perlee: Regeneron Pharmaceuticals, Inc.: Current Employment, Current holder of stock options in a privately-held company. Morton: Regeneron Pharmaceuticals, Inc.: Current Employment, Current holder of stock options in a privately-held company. Weinreich: Regeneron Pharmaceuticals, Inc.: Current Employment, Current holder of stock options in a privately-held company. Yancopoulos: Regeneron Pharmaceuticals, Inc.: Current Employment, Current holder of stock options in a privately-held company.

scholarly journals Safety and efficacy of low-dose PI3K inhibitor taselisib in adult patients with CLOVES and Klippel–Trenaunay syndrome (KTS): the TOTEM trial, a phase 1/2 multicenter, open-label, single-arm study

2021 ◽  
Author(s):  
M. Luu ◽  
P. Vabres ◽  
H. Devilliers ◽  
R. Loffroy ◽  
A. Phan ◽  
...  
Keyword(s):  
Low Dose ◽  
Phase 1 ◽  
Pi3k Inhibitor ◽  
Functional Improvement ◽  
Open Label ◽  
Tissue Volume ◽  
Pathogenic Variants ◽  
Patient Reported ◽  
Affected Tissue ◽  
Phosphoinositide 3 Kinase

ABSTRACT Purpose PIK3CA pathogenic variants in the PIK3CA-related overgrowth spectrum (PROS) activate phosphoinositide 3-kinase signaling, providing a rationale for targeted therapy, but no drug has proven efficacy and safety in this population. Our aim was to establish the six-month tolerability and efficacy of low-dose taselisib, a selective class I PI3K inhibitor, in PROS patients. Methods Patients over 16 years with PROS and PIK3CA pathogenic variants were included in a phase IB/IIA multicenter, open-label single-arm trial (six patients at 1 mg/day of taselisib, then 24 at 2 mg/day). The primary outcome was the occurrence of dose limiting toxicity (DLT). Efficacy outcomes were the relative changes after treatment of (1) tissue volume at affected and unaffected sites, both clinically and on imaging; (2) cutaneous vascular outcomes when relevant; (3) biologic parameters; (4) quality of life; and (5) patient-reported outcomes. Results Among 19 enrolled patients, 2 experienced a DLT (enteritis and pachymeningitis) leading to early trial termination (17 treated, 10 completed the study). No serious adverse reaction occurred in the 1 mg cohort (n = 6). No significant reduction in affected tissue volume was observed (mean −4.2%; p = 0.81; SD 14.01). Thirteen (76.4%) participants reported clinical improvement (pain reduction, chronic bleeding resolution, functional improvement). Conclusion Despite functional improvement, the safety profile of low-dose taselisib precludes its long-term use.

scholarly journals Efficacy of rFVIIIFc for First-Time Immune Tolerance Induction (ITI) Therapy: Final Results from the Global, Prospective VerITI-8 Study

Blood ◽  
2021 ◽  
Vol 138 (Supplement 2) ◽  
pp. LBA-5-LBA-5
Author(s):  
Lynn Malec ◽  
An Van Damme ◽  
Anthony Chan ◽  
Mariya Spasova ◽  
Nisha Jain ◽  
...  
Keyword(s):  
Half Life ◽  
Stock Options ◽  
Research Funding ◽  
Hemophilia A ◽  
High Titer ◽  
High Dose ◽  
Severe Hemophilia ◽  
First Time ◽  
Inhibitor Titer ◽  
Privately Held

Abstract Introduction: Inhibitor development is a major complication of factor VIII (FVIII) replacement therapy, affecting approximately 30% of people with severe hemophilia A (Peyvandi et al Lancet 2016). Inhibitor eradication is the standard of care to restore responsiveness to FVIII; however, ITI regimens often require frequent high-dose factor injections over a long period (DiMichele et al Haemophilia 2007; Carcao et al Haemophilia 2021). Median (interquartile range [IQR]) time (months) to negative titer in the International ITI Study with high-dose FVIII was 4.6 (2.8-13.8) (n=31); negative titer to normal recovery was 6.9 (3.5-12.0) (n=23); and normal recovery to tolerance was 10.6 (6.3-20.5) (n=22) (Hay and DiMichele Blood 2012). Recombinant factor VIII Fc fusion protein (rFVIIIFc) is an extended half-life (EHL) FVIII that showed potential benefits for ITI in retrospective clinical data and case reports (Malec et al Haemophilia 2016; Groomes et al Pediatr Blood Cancer 2016; Carcao et al Haemophilia 2021). VerITI-8 (NCT03093480) is the first prospective study of rFVIIIFc in first-time ITI and follows on from the reITIrate (NCT03103542) study of rFVIIIFc for rescue ITI (Königs et al Res Pract Thromb Haemost, ISTH 2021). Aim: Describe outcomes in the verITI-8 study of first-time ITI with rFVIIIFc over 48 weeks in subjects with severe hemophilia A and high-titer inhibitors. Methods: VerITI-8 is a prospective, single-arm, open-label, multicenter study exploring efficacy of rFVIIIFc for first-time ITI in people with severe hemophilia A with high-titer inhibitors. Initial screening was followed by an ITI period in which all subjects received rFVIIIFc 200 IU/kg/day until tolerization or 48 weeks had elapsed (Figure). This was followed by tapered dose reduction to standard prophylaxis and follow-up. Key inclusion criteria included males with severe hemophilia A, high-titer inhibitors (historical peak ≥5 Bethesda units [BU]/mL), and prior treatment with any plasma-derived or recombinant standard half-life or EHL FVIII. Key exclusion criteria included coagulation disorder(s) other than hemophilia A and previous ITI. The primary endpoint was time to tolerization (successful ITI) with rFVIIIFc defined by inhibitor titer <0.6 BU/mL, incremental recovery (IR) ≥66% of expected IR (IR ≥1.32 IU/dL per IU/kg) (both at 2 consecutive visits), and t ½ ≥7 hours (h) within 48 weeks. Secondary endpoints included number of subjects achieving ITI success, annualized bleed rates (ABR), and adverse events (AEs). Results: Sixteen subjects were enrolled and received ≥1 rFVIIIFc dose. Median (range) age at baseline was 2.1 (0.8-16.0) years, and historical peak inhibitor titer was 22.4 (6.2-256.0) BU/mL (Table). Twelve (75%), 11 (69%), and 10 (63%) subjects, respectively, achieved a negative inhibitor titer, an IR >66%, and a t½ ≥7 h (ie, tolerance) within 48 weeks. Median (IQR) times in weeks to achieve these markers of success were 7.4 (2.2-17.8), 6.8 (5.4-22.4), and 11.7 (9.8-26.2) (ie, 2.7 [2.3-6.0] months to tolerance), respectively. One subject achieved partial success (negative inhibitor titer and IR ≥66%), and 5 subjects failed ITI, of which 2 had high inhibitors throughout, 2 experienced an increase in inhibitor levels, and 1 recorded a negative inhibitor titer at 282 days. Most bleeds occurred in the ITI period when median (IQR) ABRs (n=13) were 3.8 (0-10.1) overall, 0 (0-2.6) for spontaneous, 1 (0-4) for traumatic, and 0 (0-3.1) for joint. During tapering, median (IQR) ABRs (n=10) were overall, 0 (0-2.4); spontaneous, 0 (0-0); traumatic, 0 (0-1.3); and joint, 0 (0-0). All 16 subjects experienced ≥1 treatment-emergent AE (TEAE), the most frequent of which was pyrexia in 7 subjects (44%). One subject reported ≥1 related TEAE (injection site pain). Nine subjects (56%) experienced ≥1 treatment-emergent serious AE (TESAE). TESAEs occurring in ≥2 subjects included vascular device infection, contusion, and hemarthrosis. No treatment-related TESAEs, discontinuations due to AEs, or deaths were reported. Conclusions: rFVIIIFc is the first EHL FVIII with prospective data for first-time ITI in patients with severe hemophilia A with historical high-titer inhibitors. Evaluated within a 48-week timeframe, rFVIIIFc offered rapid time to tolerization (median 11.7 weeks; 2.7 months) with durable responses in almost two-thirds of subjects and was well tolerated. Optimizing ITI to eradicate inhibitors remains a priority. Figure 1 Figure 1. Disclosures Malec: CSL Behring: Consultancy; Genentech: Consultancy; HEMA Biologics: Consultancy; Pfizer: Consultancy; Sanofi: Consultancy, Research Funding; Takeda: Consultancy; Bioverativ: Consultancy, Research Funding, Speakers Bureau; Shire: Consultancy; Bayer: Consultancy. Van Damme: Pfizer: Consultancy; Shire: Consultancy; Bayer: Consultancy. Chan: Bioverativ: Consultancy. Jain: Sanofi: Ended employment in the past 24 months; Takeda: Current Employment, Current holder of stock options in a privately-held company. Sensinger: Sanofi: Current Employment, Current holder of stock options in a privately-held company. Dumont: Sanofi: Current Employment, Current holder of stock options in a privately-held company. Lethagen: Sobi: Current Employment, Current holder of stock options in a privately-held company. Carcao: Bayer, Bioverativ/Sanofi, CSL Behring, Novo Nordisk, Octapharma, Pfizer, Roche, and Shire/Takeda: Research Funding; Bayer, Bioverativ/Sanofi, CSL Behring, Grifols, LFB, Novo Nordisk, Pfizer, Roche, and Shire/Takeda: Honoraria, Membership on an entity's Board of Directors or advisory committees. Peyvandi: Roche: Consultancy, Honoraria; Sanofi: Consultancy, Honoraria; Sobi: Consultancy, Honoraria; Takeda: Consultancy, Honoraria; Ablynx, Grifols, Kedrion, Novo Nordisk, Roche, Shire, and Sobi: Other: Personal Fees. OffLabel Disclosure: adheres to routine clinical practice

scholarly journals An open label, adaptive, phase 1 trial of high‐dose oral nitazoxanide in healthy volunteers: an antiviral candidate for SARS‐CoV‐2

2021 ◽  
Author(s):  
Lauren E Walker ◽  
Richard FitzGerald ◽  
Geoffrey Saunders ◽  
Rebecca Lyon ◽  
Michael Fisher ◽  
...  
Keyword(s):  
Healthy Volunteers ◽  
Phase 1 ◽  
High Dose ◽  
Open Label ◽  
Phase 1 Trial ◽  
Dose Oral

A Phase 1, Open-Label Assessment of a Dengue Virus-1 Live Virus Human Challenge Strain

2020 ◽  
Author(s):  
Timothy P Endy ◽  
Dongliang Wang ◽  
Mark E Polhemus ◽  
Richard G Jarman ◽  
Louis E Jasper ◽  
...  
Keyword(s):  
Dose Group ◽  
Low Dose ◽  
Phase 1 ◽  
Human Infection ◽  
Open Label ◽  
Serious Adverse Events ◽  
Live Virus ◽  
Challenge Virus ◽  
Infection Models ◽  
And Performance

Abstract Background Dengue human infection models (DHIM) have been used as a safe means to test the viability of prophylaxis and therapeutics. Methods A phase 1 study of 12 healthy adult volunteers using a challenge virus, DENV-1-LVHC strain 45AZ5, was performed. A dose escalating design was used to determine the safety and performance profile of the challenge virus. Subjects were evaluated extensively until 28 days and then out to 6 months. Results Twelve subjects received the challenge virus: 6 with 0.5 mL of 6.5 × 103 plaque-forming units (PFU)/mL (low-dose group) and 6 with 0.5 mL of 6.5 × 104 PFU/mL (mid-dose group). All except 1 in the low-dose group developed detectable viremia. For all subjects the mean incubation period was 5.9 days (range 5–9 days) and mean time of viremia was 6.8 days (range 3–9 days). Mean peak for all subjects was 1.6 × 107 genome equivalents (GE)/mL (range 4.6 × 103 to 5 × 107 GE/mL). There were no serious adverse events or long-term safety signals noted. Conclusions We conclude that DENV-1-LVHC was well-tolerated, resulted in an uncomplicated dengue illness, and may be a suitable DHIM for therapeutic and prophylactic product testing. Clinical Trials Registration NCT02372175.

Phase 1 study to evaluate safety and efficacy of ipilimumab + nivolumab + external beam radiotherapy in patients with metastatic melanoma.

2017 ◽  
Vol 35 (15_suppl) ◽  
pp. TPS9591-TPS9591
Author(s):  
Michael Andrew Postow ◽  
Susan Jane Knox ◽  
Danielle McCabe ◽  
Mary J. Macri ◽  
Paul Schwarzenberger ◽  
...  
Keyword(s):  
Clinical Trial ◽  
Metastatic Melanoma ◽  
Phase 1 ◽  
External Beam Radiotherapy ◽  
Objective Response ◽  
Palliative Therapy ◽  
Dose Fractionation ◽  
High Dose ◽  
Melanoma Metastasis ◽  
Open Label

TPS9591 Background: Immunotherapy (IMT) with checkpoint blocking antibodies has led to progress in metastatic melanoma with 3 FDA-approved drugs, including the combination of ipilimumab (IPI), a CTLA-4 antibody, and nivolumab (NIVO), a PD-1 antibody. Although radiotherapy (RT) is primarily used as local palliative therapy in metastatic melanoma, it also possibly affects systemic antitumor immunity. Preclinical data suggest RT alters the tumor microenvironment and renders tumor cells more susceptible to immunologically-mediated disease regression. These preclinical immunologic effects of RT have been shown to vary by RT dose and fractionation. We are now conducting the first clinical trial in patients to evaluate the triple combination of IPI + NIVO + RT using 2 different dose/fractionation schemes of RT. Methods: This ongoing Phase 1, open-label, multicenter study (NCT02659540) evaluates safety, efficacy, and immunologic effects of IPI + NIVO + RT in 18 patients with unresectable stage IV melanoma. Patients must have 1 melanoma metastasis that can be safely irradiated for palliative purposes and at least 1 measurable lesion that will not be irradiated. Patients receive concurrent IPI (3 mg/kg) and NIVO (1 mg/kg) every 3 weeks (Q3W) x 4, followed by NIVO monotherapy (240 mg Q2W), with RT initiated between the first and second doses of IPI + NIVO. In Cohort A, the irradiated metastasis receives a conventionally fractionated low dose of 30 Gy in 10 fractions of 3 Gy each over 2 weeks. If ≤7 of 9 patients (78%) in Cohort A have Grade 3/4 drug- or radiation-related adverse events, safety is deemed acceptable and Cohort B enrollment opens. In Cohort B, the irradiated metastasis receives a hypofractionated high dose of 27 Gy in 3 fractions of 9 Gy each over 2 weeks. The primary endpoint is safety. Secondary endpoints are objective response rate and disease control rate by RECIST and immune-related RECIST measured at Weeks 12 and 18, duration of response, progression-free survival, and overall survival. Exploratory endpoints include correlative studies of immunological effects. Enrollment opened on 05 Aug 2016. As of 31 Dec 2016, 4 patients are enrolled in Cohort A; enrollment is ongoing. Clinical trial information: NCT02659540.

Efficacy of alpha-1,3-galactosyltransferase-expressing allogeneic renal cell carcinoma immunotherapy in patients (pts) with refractory metastatic renal cell carcinoma (mRCC).

2019 ◽  
Vol 37 (7_suppl) ◽  
pp. 590-590
Author(s):  
Andrew W Hahn ◽  
Charles G. Drake ◽  
Samuel R. Denmeade ◽  
Yousef Zakharia ◽  
Benjamin Louis Maughan ◽  
...  
Keyword(s):  
Renal Cell Carcinoma ◽  
Cell Carcinoma ◽  
Renal Cell ◽  
Low Dose ◽  
Phase 1 ◽  
High Dose ◽  
Concomitant Treatment ◽  
Renal Cancer Cell ◽  
Potential Efficacy ◽  
Unique Mechanism

590 Background: HyperAcute Renal (HAR) immunotherapy consists of two allogeneic renal cancer cell lines that have been genetically modified to express α(1,3)Gal, to which humans have an inherent pre-existing immunity. A previous report demonstrated that HAR is well tolerated in pts with mRCC (2017 GUASCO, abstract: 528). Herein, we report the efficacy of HAR immunotherapy in mRCC. Methods: Pts with refractory clear-cell mRCC were eligible for this phase 1 dose-escalation trial. Concomitant treatment (Rx) with other approved agents was permitted after initial 2 months (m) of HAR monotherapy. The trial followed a standard 3+3 design with cells injected intradermally weekly for 4 weeks then biweekly injections for 10 immunizations (150 x106cells then escalated to 300 x106cells). Co-primary objectives were safety and efficacy. Results: A total of 18 patients were enrolled (4 low dose, 14 high dose) between 06/2015 to 07/2016. Patients received a median of 1 systemic Rx prior to HAR immunotherapy, with 8 patients receiving 2 or more prior agents. IMDC risk categories at the time of initial metastatic disease were: favorable risk (33%), intermediate risk (66%), poor risk (0%). The ORR was 0% with a disease control rate of 50%. Median PFS for patients treated with HAR immunotherapy was 2.0 months (m) (range 1.7-30.3 m). For patients receiving the low dose HAR, median overall survival (OS) was 14.2 m (range 3.6-21.6 m), while median OS for high dose HAR was 25.3 m (5.8-29.3 m). At the time of data cutoff in 09/2018, 7 patients were still living. Detailed clinical data will be presented in the meeting. Conclusions: HAR immunotherapy in refractory mRCC was well tolerated and demonstrated potential efficacy for OS similar to currently approved salvage-line Rx. With a unique mechanism of action, HAR immunotherapy may be a candidate for inclusion in novel combinatorial regimens being developed in salvage therapy setting in pts with mRCC. Clinical trial information: NCT02035358.

scholarly journals Treatment withα-Lipoic Acid over 16 Weeks in Type 2 Diabetic Patients with Symptomatic Polyneuropathy Who Responded to Initial 4-Week High-Dose Loading

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Hector Garcia-Alcala ◽  
Celia Isabel Santos Vichido ◽  
Silverio Islas Macedo ◽  
Christelle Nathalie Genestier-Tamborero ◽  
Marissa Minutti-Palacios ◽  
...  
Keyword(s):  
Lipoic Acid ◽  
Phase 1 ◽  
Treated Group ◽  
Diabetic Patients ◽  
High Dose ◽  
Phase 2 ◽  
Open Label ◽  
Type 2 Diabetic Patients ◽  
Type 2 Diabetic

Effective treatment of diabetic sensorimotor polyneuropathy remains a challenge. To assess the efficacy and safety ofα-lipoic acid (ALA) over 20 weeks, we conducted a multicenter randomized withdrawal open-label study, in which 45 patients with type 2 diabetes and symptomatic polyneuropathy were initially treated with ALA (600 mg tid) for 4 weeks (phase 1). Subsequently, responders were randomized to receive ALA (600 mg qd;n=16) or to ALA withdrawal (n=17) for 16 weeks (phase 2). During phase 1, the Total Symptom Score (TSS) decreased from 8.9 ± 1.8 points to 3.46 ± 2.0 points. During phase 2, TSS improved from 3.7 ± 1.9 points to 2.5 ± 2.5 points in the ALA treated group (p<0.05) and remained unchanged in the ALA withdrawal group. The use of analgesic rescue medication was higher in the ALA withdrawal group than ALA treated group (p<0.05). In conclusion, in type 2 diabetic patients with symptomatic polyneuropathy who responded to initial 4-week high-dose (600 mg tid) administration of ALA, subsequent treatment with ALA (600 mg qd) over 16 weeks improved neuropathic symptoms, whereas ALA withdrawal was associated with a higher use of rescue analgesic drugs. This trial is registered with ClinicalTrials.gov Identifier:NCT02439879.

scholarly journals A Phase 1/1b Open-Label, Multicenter, Two-Part Study of SETD2 Inhibitor EZM0414 in Patients with Relapsed/Refractory Multiple Myeloma or Diffuse Large B-Cell Lymphoma

Blood ◽  
2021 ◽  
Vol 138 (Supplement 1) ◽  
pp. 1679-1679
Author(s):  
Paul G. Richardson ◽  
Ruben Niesvizky ◽  
Jay Yang ◽  
Neelu Yadav ◽  
Helen Hsu ◽  
...  
Keyword(s):  
Stock Options ◽  
Research Funding ◽  
Cell Lymphoma ◽  
Phase 1 ◽  
B Cell Lymphoma ◽  
Standard Of Care ◽  
Phase 2 ◽  
Open Label ◽  
Large B Cell Lymphoma ◽  
Phase 1B

Abstract Background: Multiple myeloma (MM) is a heterogeneous disease of monoclonal plasma cells. More than 40% of patients with MM harbor translocations of the immunoglobulin heavy chain (IGH) gene on chromosome 14, leading to overexpression of putative oncogenes which can ultimately lead to plasma cell-derived, post-malignancy MM. One such translocation, t(4;14), is seen in 15% of patients and juxtaposes IGH control elements with two genes on chromosome 4, FGFR3 and MMSET. Patients harboring the (4;14) translocation have a poor response to standard of care therapies and an overall poor prognosis. MMSET expression has been confirmed as a driver in t(4;14) MM pathogenesis, but MMSET inhibitors have not yet been successfully developed in the clinic. Since MMSET generates the substrate for Su(var)3-9, enhancer of zeste, trithorax domain-containing 2 (SETD2) activity, SETD2 inhibition offers promise for targeting the underlying oncogenic mechanism in t(4;14) MM. Diffuse large B-cell lymphoma (DLBCL) is the most common type of lymphoma in the United States, with a 5-year relative survival rate of 53% in patients diagnosed with stage IV DLBCL. Given the poor survival outcomes and low remission rates for patients with relapsed or refractory (R/R) DLBCL, there is a need for better treatment options. Although SETD2 mutations are described in DLBCL, the mechanism of action of SETD2 inhibitors remains unclear. EZM0414 is a potent and selective, orally bioavailable small-molecule inhibitor of SETD2. Preclinical data have demonstrated antitumor activity of EZM0414 in both t(4;14) and non-t(4;14) MM and DLBCL models. This study (enrollment scheduled to begin Q3 2021) will evaluate the safety and efficacy of EZM0414 when administered as monotherapy in patients with R/R MM with or without t(4;14), or with R/R DLBCL. Study Design and Methods: This first-in-human, 2-part, multicenter, open-label study will enroll patients aged ≥18 years with R/R MM who have received prior treatment with immune modulators, proteasome inhibitors, and anti-CD38 therapy, or who are intolerant to established therapies known to provide clinical benefit in MM, or with R/R DLBCL who have received at least 2 prior lines of therapy, including treatment with rituximab plus cyclophosphamide, doxorubicin, vincristine, and prednisone (R-CHOP); rituximab, etoposide, prednisone, vincristine, cyclophosphamide, and doxorubicin (R-EPOCH); rituximab, cyclophosphamide, vincristine, doxorubicin, and dexamethasone (R-hyper CVAD); or other standard of care therapies. Patients eligible for autologous stem cell transplantation will be excluded from this study. The first part of the study will be a phase 1 dose escalation study using a Bayesian optimal interval design to evaluate the safety and tolerability of EZM0414 in patients with R/R MM with or without t(4;14), or with R/R DLBCL. Six dose levels of 100, 200, 300, 400, 600, and 900 mg administered once daily will be tested. Patients will be enrolled and treated in a cohort size of 3, and up to 36 patients will be enrolled to evaluate at least 10 patients at the maximum tolerated dose (MTD). The MTD will be selected at the dose level with a target dose-limiting toxicity rate ≤25%. The second part of the study (phase 1b) will be a dose expansion at the MTD in patients with R/R MM with or without t(4;14), or with R/R DLBCL using the Bayesian optimal phase 2 design. Dose expansion will include 3 cohorts of up to 20 patients each. Cohort 1 will enroll patients with t(4;14)-positive R/R MM, cohort 2 will enroll patients with t(4;14)-negative R/R MM, and cohort 3 will enroll patients with R/R DLBCL. The primary endpoints will be determining safety, dose-limiting toxicities, the MTD, and a recommended phase 2 dose. Secondary endpoints include the objective response rate, progression-free survival, and duration of response. Exploratory endpoints include a pharmacokinetic/pharmacodynamic profile analysis and the determination of mechanism of action biomarkers, such as histones and histone methylation. The study design will include a futility assessment in the phase 1b part of the study, which will be initiated when clinical data from the first 10, 15, and 20 enrolled patients in the expansion cohort are available. Disclosures Richardson: Takeda: Consultancy, Research Funding; Karyopharm: Consultancy, Research Funding; Secura Bio: Consultancy; Janssen: Consultancy; GlaxoSmithKline: Consultancy; AstraZeneca: Consultancy; Jazz Pharmaceuticals: Consultancy, Research Funding; Regeneron: Consultancy; Celgene/BMS: Consultancy, Research Funding; AbbVie: Consultancy; Sanofi: Consultancy; Protocol Intelligence: Consultancy; Oncopeptides: Consultancy, Research Funding. Niesvizky: BMS: Consultancy, Research Funding; GSK: Consultancy, Research Funding; Janssen: Consultancy, Research Funding; Karyopharm: Consultancy, Research Funding; Takeda: Consultancy, Research Funding. Yang: Epizyme, Inc.: Current Employment, Other: May own stock/options. Yadav: Epizyme, Inc.: Current Employment, Current holder of stock options in a privately-held company. Hsu: Epizyme, Inc.: Current Employment, Current holder of stock options in a privately-held company. Flowers: Iovance: Research Funding; Adaptimmune: Research Funding; Guardant: Research Funding; Denovo: Consultancy; Celgene: Consultancy, Research Funding; Karyopharm: Consultancy; Kite: Research Funding; Spectrum: Consultancy; Biopharma: Consultancy; SeaGen: Consultancy; Pharmacyclics/Janssen: Consultancy; Epizyme, Inc.: Consultancy; Acerta: Research Funding; 4D: Research Funding; Eastern Cooperative Oncology Group: Research Funding; Nektar: Research Funding; Sanofi: Research Funding; Morphosys: Research Funding; AbbVie: Consultancy, Research Funding; Bayer: Consultancy, Research Funding; Gilead: Consultancy, Research Funding; Genentech/Roche: Consultancy, Research Funding; Genmab: Consultancy; Novartis: Research Funding; Pfizer: Research Funding; Janssen: Research Funding; National Cancer Institute: Research Funding; Allogene: Research Funding; Amgen: Research Funding; Takeda: Research Funding; Cellectis: Research Funding; Cancer Prevention and Research Institute of Texas: CPRIT Scholar in Cancer Research: Research Funding; BeiGene: Consultancy; Xencor: Research Funding; TG Therapeutics: Research Funding; EMD: Research Funding; Burroughs Wellcome Fund: Research Funding; Ziopharm: Research Funding; Pharmacyclics: Research Funding.

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