DISSOLVE II
A Randomized Double-Blind, Placebo-Controlled Study of SEL-212 in Patients With Gout Refractory to Conventional Therapy
Sponsor study identifier
Secondary identifiers
EUDRACT_NUMBER
interventional
153
5 countries
53
Study Start
November 30, 2020
Actual (reported)Primary Completion
January 10, 2023
Actual (reported)Study Completion
January 12, 2023
Actual (reported)This is one of two replicate randomized, double-blind, placebo-controlled, parallel arm trials to determine the safety and efficacy of two different dose levels of SEL-212 compared to placebo. 112 and 153 patients, stratified as to the presence or absence of tophi, were randomized in a 1:1:1 allocation ratio prior to Baseline to receive treatment with one of two dose levels of SEL-212 or placebo every 28 days for approximately 6 months in each trial respectively (SEL-212/301 and SEL-212/302). Analysis of primary and key efficacy were performed at Day 28 of Treatment Period 6. Safety was monitored throughout the study.
Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.
January 12, 2023
Actual (reported)Click on a node to explore related trials.
Some registry-reported names shown below are not yet linked in this graph.
Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.
October 15, 2020
Actual (reported)October 22, 2020
Actual (reported)November 30, 2020
Actual (reported)January 10, 2023
Actual (reported)January 12, 2023
Actual (reported)December 3, 2025
Actual (reported)Proportion of Participants Who Achieved and Maintained Reduction in Serum Uric Acid (sUA) < 6 Milligrams Per Deciliter (mg/dL) for At Least 80% of The Time During Treatment Period 6 (Month 6)
Month 6
Change From Baseline in Mean sUA
Baseline up to 6 months
Percentage Change From Baseline in Mean sUA
Baseline up to 6 months
Change From Baseline in the Physical Component Summary Score of the Short Form Health Survey (SF-36)
Baseline up to 6 months
Proportion of Participants With at Least Partial Response (PR) (as Best Response) in Overall Tophus Response Evaluation in Participants With Tophi at Baseline
Baseline Up to 6 months
Proportion of Participants Who Achieved and Maintained Reduction of sUA < 6 mg/dL for at Least 80% of the Time During Month 6 in the Subset of Participants With Tophi at Baseline
Baseline up to 6 months
IV infusion of SEL-212 low-dose every 28 days for a total of up to 6 infusions
IV infusion of SEL-212 high-dose every 28 days for a total of up to 6 infusions
IV infusion of Normal Saline every 28 days for a total of up to 6 infusions
SEL-212 low-dose Drug: SEL-037 (0.2 mg/kg) SEL-037, PEGylated uric acid specific enzyme (uricase) Other Names: Pegadricase, pegsiticase Drug: SEL-110.36 (0.1 mg/kg) Other Names: SEL-110, ImmTOR
SEL-212 high-dose Drug: SEL-037 (0.2 mg/kg) SEL-037, PEGylated uric acid specific enzyme (uricase) Other Names: Pegadricase, pegsiticase Drug: SEL-110.36 (0.15 mg/kg) Other Names: SEL-110, ImmTOR
Clinical Research Of West Florida Incorporated
Clearwater, Florida, 33765, United States
Omegas Research Consultants LLC
DeBary, Florida, 32713, United States
Sweet Hope Research Specialty, Inc
Hialeah, Florida, 33016, United States
Homestead Associates in Research,Inc
Miami, Florida, 33032, United States
D&H National Research Centers
Miami, Florida, 33155, United States
Panax Clinical Research
Miami Lakes, Florida, 33014, United States
Napa Research
Pompano Beach, Florida, 33064, United States
Medical Director
Swedish Orphan Biovitrum AB (publ)
153 participants (actual enrollment reported by the registry).
First Submitted
October 15, 2020
First Posted
October 22, 2020
Study Start
November 30, 2020
Actual (reported)Normal saline
Registry-reported names are shown in full. Names without a link have not yet been matched to a Syfrah profile.
Contact the study team to confirm eligibility.
Clinical Research of West Florida, Inc.
Tampa, Florida, 33606, United States
Conquest Research
Winter Park, Florida, 32789, United States
Horizon Clinical Research
Fayetteville, Georgia, 30214, United States
Arthritis Center of North Georgia, LLC
Gainesville, Georgia, 30501, United States
Injury Care Medical Center
Boise, Idaho, 83713, United States
Great Lakes Clinical Trials at Ravenswood Rheumatology
Chicago, Illinois, 60640, United States
Great Lakes Clinical Trials LLC
Chicago, Illinois, 60640, United States
The Center for Rheumatology and Bone Research
Wheaton, Maryland, 20902, United States
University Of Michigan
Ann Arbor, Michigan, 48109, United States
Elite Clinical Research, LLC
Jackson, Mississippi, 39202, United States
Rutgers- New Jersey Medical School
Newark, New Jersey, 07103, United States
Medication Management of Greensboro
Greensboro, North Carolina, 27408, United States
Triad Clinical Trials
Greensboro, North Carolina, 27410, United States
Carolina Research Center, Inc
Shelby, North Carolina, 28150, United States
META Medical Research Institute LLC
Dayton, Ohio, 45432, United States
Altoona Center for Clinical Research
Duncansville, Pennsylvania, 16635, United States
New Phase Research and Development
Knoxville, Tennessee, 37909, United States
Amarillo Center for Clinical Research, Ltd.
Amarillo, Texas, 79124, United States
Heritage Rheumatology and Arthritis Care
Colleyville, Texas, 76034, United States
Pioneer Research Solutions, Inc.
Houston, Texas, 77099, United States
Southwest Rheumatology Research LLC
Mesquite, Texas, 75150, United States
AIM Trials - Internal Medicine
Plano, Texas, 75074, United States
Arthritis Northwest, PLLC - Research
Spokane, Washington, 99204, United States
Aleksandre Aladashvili Clinic LLC
Tbilisi, 0102, Georgia
LTD Israeli-Georgian Medical Research Clinic "Helsicore"
Tbilisi, 0112, Georgia
JSC "Evex Hospitals"
Tbilisi, 0159, Georgia
LTD MediClub Georgia
Tbilisi, 0160, Georgia
LTD Georgian-Dutch Hospital
Tbilisi, 0172, Georgia
LTD "The First Medical Center"
Tbilisi, 0180, Georgia
Republican Hospital n.a. V.A. Baranov
Petrozavodsk, Kareliya, Respublika, 185019, Russia
Research Institute of Rheumatology n.a. Nasonova
Moscow, Moscow, 115522, Russia
GBOU VPO Orenburg State Medical University
Orenburg, Orenburg Oblast, 460018, Russia
Ryazan State Medical University n. a. I.P. Pavlov
Ryazan, Ryazan Oblast, 390039, Russia
Clinical Rheumatological Hospital #25
Saint Petersburg, Sankt-Peterburg, 190068, Russia
Medical-sanitary unit #157 - Rheumatology
Saint Petersburg, Sankt-Peterburg, 196066, Russia
Institute for Treatment and Rehabilitation Niska Banja
Niška Banja, Nišavski Okrug, 18205, Serbia
Institute for Rheumatology - Rheumatology
Belgrade, 11000, Serbia
Institute for Rheumatology
Belgrade, 11000, Serbia
Military Medical Academy
Belgrade, 11000, Serbia
Clinical Hospital Center Bezanisjka Kosa
Belgrade, 11080, Serbia
Tovarystvo z obmezhenoi vidpov
Kyiv, Kyïv, 02081, Ukraine
Naukovo-Doslidnyi Inst. Reabil
Vinnytsia, Vinnytsia Oblast, 21029, Ukraine
Medychnyi tsentr Tovarystva z
Zaporizhzhya, Zaporizhzhia Oblast, 69005, Ukraine
Cherkaska Oblasna likarnia
Cherkasy, 18009, Ukraine
Kyivska klinichna likarnia na
Kyiv, 03049, Ukraine
Vinnytska Oblasna klinichna likarnia imeni M.I
Vinnytsia, 21018, Ukraine
Primary Completion
January 10, 2023
Actual (reported)Study Completion
January 12, 2023
Actual (reported)Last Updated
December 3, 2025
Results First Posted
December 3, 2025
Record last verified: 2025-11
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Source: ClinicalTrials.gov.
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