A Phase III Multi-center, Open-label, Sponsor-blinded, Randomized Study of AZD0901 Monotherapy Compared With Investigator's Choice of Therapy in Second- or Later-Line Adult Participants With Advanced/Metastatic Gastric or Gastroesophageal Junction Adenocarcinoma Expressing Claudin18.2 (CLARITY Gastric 01)

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Investigational drug late phase More information Active drug More information Moderate burden on patient More information

Trial Details

Sponsor: AstraZeneca (industry)

Phase: 3

Start date: March 4, 2024

Planned enrollment: 572

Trial ID: NCT06346392
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More trial details at ClinicalTrials.gov More info

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Investigational Drug AI Analysis

chevron Show for: AZD0901 (Sonesitatug vedotin, CMG901)

chevron Show for: Apatinib (Rivoceranib)

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Goal: Evaluate whether the Claudin 18.2–targeted antibody–drug conjugate AZD0901 improves progression-free and overall survival versus investigator’s choice of therapy in previously treated, advanced/metastatic gastric or gastroesophageal junction adenocarcinoma expressing CLDN18.2, and concurrently validate the clinical performance of the Ventana CLDN18.2 assay for patient selection.

Patients: Adults (≥18 years) with histologically confirmed unresectable, locally advanced or metastatic gastric, GEJ, or distal esophageal adenocarcinoma, CLDN18.2-positive by archival (≤24 months) or fresh biopsy, after progression on at least one prior line including a fluoropyrimidine and a platinum; ECOG 0–1; adequate organ function; measurable or evaluable disease. Key exclusions include HER2-positive tumors, significant or unstable gastric bleeding/ulcers, active or recent CNS disease, clinically significant corneal disease, persistent ≥grade 2 toxicities from prior therapy, prior ADC with MMAE or non-antibody CLDN18.2-targeted therapies, and recent thromboembolic events.

Design: Global, multi-center, open-label, sponsor-blinded, randomized phase III trial. Approximately 572 participants randomized to AZD0901 or investigator’s choice of standard regimens. Stratification and central blinded independent review are planned for efficacy assessments. The trial also incorporates evaluation of an investigational CLDN18.2 IVD assay.

Treatments: AZD0901 monotherapy (two dose levels were planned; enrollment to the higher dose arm has been closed). AZD0901 (sonesitatug vedotin) is a Claudin 18.2–targeted antibody–drug conjugate that delivers the microtubule inhibitor MMAE via a cleavable linker, with additional Fc-mediated effector functions and potential bystander effect. In phase 1 gastric/GEJ cohorts, confirmed objective response rate was about 28% to 33% with median duration of response near 8 months; grade ≥3 toxicities were mainly hematologic and gastrointestinal, supporting a recommended dose around 2.2 mg/kg every 3 weeks. Comparator: investigator’s choice of regionally accepted therapies, including ramucirumab plus paclitaxel, single-agent paclitaxel, docetaxel, irinotecan, TAS-102, or apatinib (briefly, VEGFR2 inhibitor used in some regions for refractory gastric cancer).

Outcomes: Dual primary endpoints: progression-free survival in all randomized participants and overall survival in the subset treated in third line or later. Key secondary endpoints include overall survival and PFS in all randomized and in 3L+ subgroups, objective response rate and duration of response by BICR per RECIST 1.1, safety and tolerability, pharmacokinetics of AZD0901/total antibody/MMAE, and immunogenicity (ADA prevalence, incidence, and titer).

Burden on patient: Moderate. As a phase III ADC study, participants will undergo standard oncology visits and imaging at intervals typical for metastatic gastric cancer, plus added procedures for ADC characterization: serial blood draws for PK and immunogenicity through at least 30 days after discontinuation, and testing for CLDN18.2 positivity via archival tissue or fresh biopsy if needed. Treatment involves intravenous infusions on a repeating schedule with monitoring for infusion reactions and ADC-related toxicities, which may require more frequent labs early in treatment. Travel and time commitments are greater than for oral regimens but comparable to standard IV chemotherapy comparators; additional PK/ADA sampling increases visit duration and venipunctures.

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São Paulo, 05652-900, Brazil

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Ribeirão Preto, 14051-140, Brazil

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Porto Alegre, 91350-200, Brazil

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Vitória, 29043-272, Brazil

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Calgary, Alberta, T2N 4N2, Canada

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North York, Ontario, M2K 1E1, Canada

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London, Ontario, N6C 2R5, Canada

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Barrie, Ontario, L4M 6M2, Canada

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Ottawa, Ontario, K1H 8L6, Canada

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Toronto, Ontario, M5G 2M9, Canada

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Montreal, Quebec, H3G 1A4, Canada

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Montreal, Quebec, H3T 1E2, Canada

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Fuzhou, 350001, China

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Shijiazhuang, 050011, China

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Shenyang, 110042, China

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Shanghai, 200040, China

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Shanghai, 200032, China

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Shanghai, 200025, China

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Qingdao, 266003, China

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Nanjing, 210009, China

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Nanjing, 210008, China

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Luoyang, 471003, China

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Lishui, 323000, China

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Lanzhou, 730000, China

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Jining, 272029, China

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Jinan, 250117, China

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Hefei, 230601, China

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Hefei, 230031, China

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Hefei, 230022, China

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Harbin, 150049, China

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Hangzhou, 310022, China

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Hangzhou, 310020, China

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Guangzhou, 510700, China

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Guangzhou, 510655, China

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Guangzhou, 510120, China

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Guangzhou, 510060, China

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Fuzhou, 350014, China

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Chengdu, 610042, China

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Chengdu, 610000, China

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Changsha, 410013, China

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Changchun, 130021, China

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Beijing, 100210, China

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Zhengzhou, 450003, China

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Yinchuan, 750004, China

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Xi'an, 710061, China

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Wuhan, 430030, China

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Wuhan, 430000, China

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Ürümqi, 830000, China

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Tianjin, 300060, China

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Suzhou, 215004, China

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Besançon, 25030, France

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Brest, 29200, France

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Lille, 59037, France

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Lyon, 69008, France

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Nantes, 44000, France

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Paris, 75571, France

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Poitiers, 86021, France

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Moers, 47441, Germany

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Göttingen, 37075, Germany

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Hamburg, 20246, Germany

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Frankfurt, 60488, Germany

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München, 81377, Germany

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Berlin, 13353, Germany

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Berlin, 10249, Germany

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Dresden, 01067, Germany

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Dresden, 01370, Germany

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Essen, 45136, Germany

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Heilbronn, 74078, Germany

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Marburg, 35043, Germany

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Heidelberg, 69120, Germany

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Mainz, 55131, Germany

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Leipzig, 04103, Germany

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Hong Kong, Hong Kong

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Hong Kong, 150001, Hong Kong

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New Delhi, 110085, India

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Mumbai, 400012, India

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Hyderabad, 500082, India

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Bengaluru, 560027, India

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Ahmedabad, 380015, India

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Milan, 20133, Italy

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Florence, 50134, Italy

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Milan, 20162, Italy

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Modena, 41124, Italy

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Napoli, 80131, Italy

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Padua, 35128, Italy

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Pisa, 56100, Italy

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Vicenza, 36100, Italy

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Tokyo, 104-0045, Japan

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Osaka, 541-8567, Japan

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Ogaki-shi, 503-8502, Japan

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Nagoya, 464-8681, Japan

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Kōtoku, 135-8550, Japan

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Kashiwa, 227-8577, Japan

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Fukuoka, 812-8582, Japan

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Toyoake-shi, 470-1192, Japan

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Yokohama, 241-8515, Japan

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Sunto-gun, 411-8777, Japan

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Warsaw, 04-141, Poland

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Bielsko-Biala, 43-300, Poland

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Gdansk, 80-219, Poland

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Katowice, 40-514, Poland

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Krakow, 31-501, Poland

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Lublin, 20-080, Poland

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Szczecin, 71-730, Poland

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Słupsk, 76-200, Poland

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Tomaszów Mazowiecki, 97-200, Poland

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Warsaw, 02-034, Poland

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Seoul, 06351, South Korea

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Seoul, 06591, South Korea

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Seoul, 05505, South Korea

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Seoul, 03722, South Korea

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Seoul, 03080, South Korea

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Gyeonggi-do, 13620, South Korea

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Barcelona, 08036, Spain

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Madrid, 28034, Spain

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Madrid, 28041, Spain

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Ourense, 32005, Spain

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Santander, 39008, Spain

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Seville, 41013, Spain

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Barcelona, 8035, Spain

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Bern, 3010, Switzerland

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Geneva, 1205, Switzerland

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Lausanne, 1011, Switzerland

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Zurich, 8032, Switzerland

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Kaohsiung City, 00807, Taiwan

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Taoyuan District, 333, Taiwan

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Kaohsiung City, 83301, Taiwan

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Taichung, 40447, Taiwan

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Tainan City, Taiwan

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Taipei, 10002, Taiwan

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Taipei, 112, Taiwan

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Bangkok, 10700, Thailand

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Hat Yai, 90110, Thailand

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Khon Kaen, 40002, Thailand

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Dusit, 10300, Thailand

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Ankara, 06230, Turkey (Türkiye)

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Status: Not yet recruiting

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Diyarbakır, 21280, Turkey (Türkiye)

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Erzurum, 25240, Turkey (Türkiye)

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Istanbul, 34098, Turkey (Türkiye)

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Cambridge, CB2 0QQ, United Kingdom

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Taunton, TA1 5DA, United Kingdom

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Oxford, OX3 7LE, United Kingdom

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Manchester, M20 4BX, United Kingdom

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London, SW3 6JJ, United Kingdom

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London, EC1A 7BE, United Kingdom

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Mobile, Alabama, 36604, United States

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Birmingham, Alabama, 35233, United States

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Status: Withdrawn

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Tucson, Arizona, 85719, United States

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Duarte, California, 91010, United States

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Fullerton, California, 92835, United States

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Irvine, California, 92618, United States

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Los Angeles, California, 90048, United States

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Los Angeles, California, 90089, United States

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Newport Beach, California, 92663, United States

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Santa Rosa, California, 95403, United States

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Washington D.C., District of Columbia, 20007, United States

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Fleming Island, Florida, 32003, United States

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Hollywood, Florida, 33021, United States

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Orlando, Florida, 32804, United States

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Marietta, Georgia, 30060, United States

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Atlanta, Georgia, 30322, United States

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Honolulu, Hawaii, 96819, United States

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Boise, Idaho, 83712, United States

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Lexington, Kentucky, 40536, United States

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Baltimore, Maryland, 21287, United States

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Boston, Massachusetts, 02114, United States

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Ann Arbor, Michigan, 48106, United States

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Ann Arbor, Michigan, 48109, United States

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St Louis, Missouri, 63128, United States

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Kansas City, Missouri, 64111, United States

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St Louis, Missouri, 63110, United States

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New York, New York, 10065, United States

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New York, New York, 10032, United States

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New York, New York, 10016, United States

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Mineola, New York, 11501, United States

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Cincinnati, Ohio, 45219, United States

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Status: Withdrawn

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Portland, Oregon, 97239, United States

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York, Pennsylvania, 17403, United States

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Philadelphia, Pennsylvania, 19111, United States

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Fredericksburg, Virginia, 22408, United States

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Charlottesville, Virginia, 22908, United States

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Seattle, Washington, 98109, United States

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Status: Not yet recruiting

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Olympia, Washington, 98502, United States

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Hanoi, 100000, Vietnam

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Vinh, 460000, Vietnam

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Ho Chi Minh City, 700000, Vietnam

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Status: Recruiting

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