NCT04847232

Brief Summary

The purpose of this study is to evaluate the effect of Sodium Zirconium Cyclosilicate (SZC) on arrhythmia-related cardiovascular outcomes in participants on chronic hemodialysis with recurrent hyperkalemia.

Trial Health

68
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Strong global presence with extensive site network
Enrollment
2,690

participants targeted

Target at P75+ for phase_3

Timeline
Completed

Started Apr 2021

Typical duration for phase_3

Geographic Reach
26 countries

340 active sites

Status
terminated

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

April 8, 2021

Completed
11 days until next milestone

First Posted

Study publicly available on registry

April 19, 2021

Completed
11 days until next milestone

Study Start

First participant enrolled

April 30, 2021

Completed
2.9 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

March 7, 2024

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

March 7, 2024

Completed
1.3 years until next milestone

Results Posted

Study results publicly available

June 18, 2025

Completed
Last Updated

June 18, 2025

Status Verified

June 1, 2025

Enrollment Period

2.9 years

First QC Date

April 8, 2021

Results QC Date

March 5, 2025

Last Update Submit

June 17, 2025

Conditions

Keywords

HemodialysisHyperkalemiaCardiovascular EventsAtrial FibrillationVentricular Tachycardia

Outcome Measures

Primary Outcomes (1)

  • Incidence of the Composite of Cardiac Event Outcomes

    Incidence of the composite endpoint of SCD, all stroke, or hospitalization/intervention/emergency department (ED) visit due to arrhythmias is analyzed based on Cox regression model with treatment and region as covariates. Patients with no events are censored at final clinical assessment, death, or disposition event.

    From Randomization (Visit 4) up to week 129 (Randomized Study Intervention Phase)

Secondary Outcomes (2)

  • Normokalemia at 12 Months Post-randomization

    Randomization to 12-Month Visit

  • Incidence of the Composite of Arrhythmia Related Events

    From Randomization (Visit 4) up to week 129 (Randomized Study Intervention Phase)

Study Arms (2)

Sodium Zirconium Cyclosilicate

EXPERIMENTAL
Drug: Sodium Zirconium Cyclosilicate (SZC)

Placebo

PLACEBO COMPARATOR
Drug: SZC Placebo

Interventions

Powder for oral suspension in a sachet. A dose is titrated in 5 g increments during a period of 4 weeks from 5 g up to 15 g qd on non-dialysis days. Afterward, the dose is adjusted monthly (or more frequent based on clinical judgment) depending on the current potassium value as measured after the long interdialytic interval (LIDI).

Also known as: Lokelma TM
Sodium Zirconium Cyclosilicate

Powder for oral suspension in a sachet. A dose is titrated in 5 g increments during a period of 4 weeks from 5 g up to 15 g qd on non-dialysis days. Afterward, the dose is adjusted monthly (or more frequent based on clinical judgment) depending on the current potassium value as measured after the LIDI.

Placebo

Eligibility Criteria

Age18 Years - 130 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Capable of giving signed informed consent which includes compliance with the requirements and restrictions listed in the ICF and in this protocol
  • Provision of signed and dated, written ICF prior to any mandatory study specific procedures, sampling, and analyses
  • Must be ≥ 18 years of age, at the time of signing the ICF.
  • Receiving hemodialysis (or hemodiafiltration) 3 times a week for treatment of ESRD for ≥ 4 months before enrollment
  • Must have hemodialysis access consisting of an arteriovenous fistula, arteriovenous graft, or tunneled (permanent) catheter which is expected to remain in place for the entire duration of the study
  • At least 2 out of 3 pre-dialysis S K ≥ 5.5 mmol/L after the LIDI during screening
  • Negative pregnancy test for female participants of childbearing potential
  • Female participants must be 1 year postmenopausal, surgically sterile, or using one highly effective form of birth control (defined as one that can achieve a failure rate of less than 1% per year when used consistently and correctly). They should have been stable on their chosen method of birth control for a minimum of 3 months before entering the study and willing to remain on the birth control until 12 weeks after the last dose

You may not qualify if:

  • Pseudohyperkalemia secondary to hemolyzed blood specimen (this situation is not considered screening failure, sampling or full screening can be postponed to a later time as applicable)
  • Presence of cardiac arrhythmias or conduction defects that require immediate treatment
  • Participants who have a pacemaker or implantable cardiac defibrillator
  • Any medical condition, including active, clinically significant infection or liver disease, that in the opinion of the investigator or sponsor may pose a safety risk to a participant in this study, confound safety or efficacy assessment and jeopardize the quality of the data, or interfere with study participation, or any other restrictions or contraindications in the local prescribing information for SZC
  • History of QT prolongation associated with other medications that required discontinuation of that medication
  • Congenital long QT syndrome
  • QTcF \> 550 msec
  • Atrial fibrillation requiring immediate/urgent intervention at screening or randomizations
  • Treated with sodium polystyrene sulfonate (SPS, Kayexalate, Resonium), calcium polystyrene sulfonate (CPS Resonium Calcium), patiromer (Veltassa), or SZC (Lokelma) within 7 days before screening or anticipated requiring chronic use of any of these agents during the study. If participant requires rescue therapy (potassium binder or dialysate S-K change during screening period), the participant will be screen failed
  • Participation in another clinical study with an investigational product, device, or non-standard hemodialysis procedure administered within one month before screening
  • Involvement in the planning and/or conduct of the study (applies to both AstraZeneca staff and/or staff at the study site)
  • Judgment by the investigator that the participant should not participate in the study if the participant is unlikely to comply with study procedures, restrictions, and requirements
  • Previous randomization in the present study
  • Females who are pregnant (confirmed with positive pregnancy test or a uterine ultrasound if pregnancy test result is questionable), breastfeeding, or planning to become pregnant during the study
  • Known hypersensitivity or previous anaphylaxis to SZC or to components thereof
  • +2 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (340)

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Huntsville, Alabama, 35805, United States

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Mesa, Arizona, 85210, United States

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Bakersfield, California, 93309, United States

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Glendale, California, 91206, United States

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Granada Hills, California, 91344, United States

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Lynwood, California, 90262, United States

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San Diego, California, 92111, United States

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Vacaville, California, 95687, United States

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Victorville, California, 92394, United States

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Denver, Colorado, 80210, United States

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Bloomfield, Connecticut, 06002, United States

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Middlebury, Connecticut, 06762, United States

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Newark, Delaware, 19713, United States

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Fort Lauderdale, Florida, 33308, United States

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Tampa, Florida, 33603, United States

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Columbus, Georgia, 31904, United States

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Lawrenceville, Georgia, 30046, United States

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Statesboro, Georgia, 30458, United States

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Nampa, Idaho, 83687, United States

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Iowa City, Iowa, 52242, United States

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Baton Rouge, Louisiana, 70815, United States

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Detroit, Michigan, 48202-2689, United States

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Kalamazoo, Michigan, 49007, United States

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Roseville, Michigan, 48066, United States

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Minneapolis, Minnesota, 55435, United States

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Brookhaven, Mississippi, 39601, United States

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Columbus, Mississippi, 39705, United States

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Tupelo, Mississippi, 38801, 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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St Louis, Missouri, 63117, United States

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Las Vegas, Nevada, 89106, United States

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Las Vegas, Nevada, 89128, United States

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Jersey City, New Jersey, 07305, United States

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Manhasset, New York, 11030, United States

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The Bronx, New York, 10461, United States

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Charlotte, North Carolina, 28208, United States

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New Bern, North Carolina, 28562, United States

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Winston-Salem, North Carolina, 27103, United States

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Bethlehem, Pennsylvania, 18017, United States

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Providence, Rhode Island, 02903, United States

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Spartanburg, South Carolina, 29306, United States

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Austin, Texas, 78751, United States

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Austin, Texas, 78758, United States

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Conroe, Texas, 77384, United States

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El Paso, Texas, 79925, United States

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El Paso, Texas, 79935, United States

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Greenville, Texas, 75402, United States

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Houston, Texas, 77054, United States

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Houston, Texas, 77090, United States

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San Antonio, Texas, 78229, United States

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San Antonio, Texas, 78251, United States

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San Antonio, Texas, 78258, United States

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St. George, Utah, 84770, United States

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Norfolk, Virginia, 23502, United States

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Virginia Beach, Virginia, 23454, United States

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Milwaukee, Wisconsin, 53226, United States

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Córdoba, X5016LIG, Argentina

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Junín, 6000, Argentina

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Mar del Plata, B7600DBZ, Argentina

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Pergamino, B2700LDK, Argentina

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San Luis, 5700, Argentina

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San Luis, D5700CTA, Argentina

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Santa Rosa, L6300, Argentina

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Sarandí, B1872EEC, Argentina

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Graz, 8036, Austria

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Innsbruck, 6020, Austria

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Brasília, 70390-700, Brazil

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Curitiba, 80230-130, Brazil

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Curitiba, 80440-020, Brazil

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Joinville, 89227-680, Brazil

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Maringá, 87060-040, Brazil

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Porto Alegre, 90020-090, Brazil

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Porto Alegre, 90160-093, Brazil

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Recife, 50720-635, Brazil

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Ribeirão Preto, 14025-170, Brazil

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Rio de Janeiro, 20551-030, Brazil

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São Paulo, 04038-031, Brazil

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São Paulo, 05024-040, Brazil

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São Paulo, 05403-9000, Brazil

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Blagoevgrad, 2700, Bulgaria

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Gotse Delchev, 2900, Bulgaria

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Haskovo, 6300, Bulgaria

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Pleven, 5800, Bulgaria

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Plovdiv, 4000, Bulgaria

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Razlog, 2760, Bulgaria

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Samokov, 2000, Bulgaria

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Sandanski, 2800, Bulgaria

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Silistra, 7500, Bulgaria

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Smolyan, 3700, Bulgaria

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Sofia, 1606, Bulgaria

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Stara Zagora, 6000, Bulgaria

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Varna, 9010, Bulgaria

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Yambol, 8600, Bulgaria

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Saint John, New Brunswick, E2L 4L2, Canada

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Halifax, Nova Scotia, B3H 2Y9, Canada

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Sydney, Nova Scotia, B1P 1P3, Canada

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Oshawa, Ontario, L1G 2B9, Canada

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Toronto, Ontario, M3M 0B2, Canada

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Greenfield Park, Quebec, J4V 2H1, Canada

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Montreal, Quebec, H1T 2M4, Canada

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Montreal, Quebec, H2T 3B3, Canada

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Montreal, Quebec, H3T 1E4, Canada

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Montreal, Quebec, H4J 1C5, Canada

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Québec, Quebec, G1R 2J6, Canada

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Beijing, 100029, China

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Beijing, 100034, China

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Beijing, 100191, China

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Changchun, 130021, China

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Changsha, 410004, China

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Changsha, 410008, China

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Changsha, 410013, China

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Changsha, 430033, China

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Changzhou, 213000, China

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Chengdu, 610000, China

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Chengdu, 610500, China

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Dongguan, 523009, China

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Foshan, 528000, China

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Fuzhou, 350001, China

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Guangzhou, 510000, China

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Guangzhou, 510080, China

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Guangzhou, 510630, China

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Guangzhou, 510800, China

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Guangzhou, 511400, China

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Guilin, 541000, China

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Guiyang, 550002, China

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Guiyang, 550004, China

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Haikou, 570311, China

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Hangzhou, 310014, China

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Hefei, 230601, China

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Hohhot, 10050, China

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Huai'an, 223300, China

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Jinan, 250031, China

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Jinhua, 322100, China

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Jiujiang, 332000, China

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Kunming, 650032, China

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Lanzhou, 730000, China

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Lanzhou, 730030, China

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Nanchang, 330006, China

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Nanjing, 210009, China

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Nanjing, 210029, China

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Nanyang, 473000, China

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Ningbo, 315010, China

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Panjin, 124009, China

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Pingxiang, 337055, China

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Qingdao, 266011, China

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Shanghai, 200240, China

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Shanghai, 201199, China

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Shanghai, 201200, China

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Shengyang, 110004, China

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Shenzhen, 518020, China

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Siping, 136000, China

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Taian, 271099, China

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Taiyuan, 030012, China

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Tianjin, 300121, China

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Tianjin, 300192, China

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Ürümqi, CN-830004, China

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Wenzhou, 325027, China

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Wuhan, 430010, China

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Wuhan, 430022, China

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Wuhu, 241000, China

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Wuxi, 214023, China

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Xiamen, 361004, China

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Xianyang, 712000, China

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Yibin, 644000, China

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Yinchuan, 750004, China

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Zhengzhou, 450052, China

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Zhuzhou, 412007, China

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České Budějovice, 370 01, Czechia

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Havlíčkův Brod, 580 22, Czechia

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Jilemnice, 514 01, Czechia

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Klatovy, 339 01, Czechia

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Liberec, 460 63, Czechia

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Nové Město na Moravě, 692 31, Czechia

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Pilsen, 32300, Czechia

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Prague, 140 21, Czechia

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Tábor, 390 03, Czechia

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Třebíč, 674 01, Czechia

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Cloppenburg, 49661, Germany

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Düsseldorf, 40210, Germany

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Hanover, 30625, Germany

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Minden, 32429, Germany

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Potsdam, 14467, Germany

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Stuttgart, 70376, Germany

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Villingen-Schwenningen, 78052, Germany

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Baja, 6500, Hungary

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Budapest, 1083, Hungary

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Kaposvár, 7400, Hungary

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Karcag, 5300, Hungary

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Kistarcsa, 2143, Hungary

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Miskolc, 3526, Hungary

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Nagykanizsa, 8800, Hungary

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Szombathely, 9700, Hungary

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Ahmedabad, 380054, India

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Chennai, 600037, India

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Dhanvantari Nagar, 605006, India

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Nadiād, 387001, India

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Pune, 411013, India

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Bassano del Grappa, 36061, Italy

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Bergamo, 24127, Italy

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Bologna, 40138, Italy

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Caserta, 81100, Italy

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Milan, 20132, Italy

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Monza, 20052, Italy

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Parma, 43100, Italy

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Pavia, 27100, Italy

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Pesaro, 61121, Italy

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Roma, 00168, Italy

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San Giovanni Rotondo, 71013, Italy

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Verona, 37124, Italy

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Fujisawa-shi, 251-0041, Japan

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Fukuoka, 810-0004, Japan

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Hamamatsu, 434-0018, Japan

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Kawasaki-shi, 210-0852, Japan

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Kumagaya-shi, 360-0831, Japan

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Kumamoto, 861-8520, Japan

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Kyoto, 600-8216, Japan

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Moriya-shi, 3020118, Japan

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Nagano, 380-0904, Japan

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Nagasaki, 852-8053, Japan

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Nakagami-gun, 901-2393, Japan

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Okinawa-shi, 904-2143, Japan

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Ōmihachiman, 523-0082, Japan

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Sashima-gun, 306-0433, Japan

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Setagaya-ku, 158-0094, Japan

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Shiroishi-shi, 989-0231, Japan

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Tamanashi, 865-0016, Japan

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Toride-shi, 302-0011, Japan

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Tsuchiura-shi, 300-0062, Japan

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Tsuchiura-shi, 300-0835, Japan

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Tsukuba, 305-0861, Japan

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Ushiku-shi, 300-1296, Japan

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Yatomi-shi, 498-0006, Japan

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Batu Caves, 68100, Malaysia

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Ipoh, 30990, Malaysia

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Malacca, 75400, Malaysia

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Seri Manjung, 32040, Malaysia

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Chihuahua City, 31203, Mexico

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Culiacán, 80230, Mexico

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D.F, 14000, Mexico

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Mazatlán, 82000, Mexico

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Mexico City, 0 3100, Mexico

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Monterrey, 64610, Mexico

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Morelia, 58260, Mexico

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San Luis Potosí City, 78250, Mexico

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Veracruz, 91900, Mexico

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Xalapa, 91020, Mexico

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Zapopan, 45138, Mexico

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Cusco, CUSCO 01, Peru

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Lima, 14, Peru

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Lima, 15036, Peru

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Lima, 15046, Peru

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Lima, 15088, Peru

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Lima, LIMA 01, Peru

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Piura, 20001, Peru

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Gdansk, 80-462, Poland

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Leżajsk, 37-300, Poland

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Lodz, 90-153, Poland

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Lodz, 92-213, Poland

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Lublin, 20-954, Poland

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Oleśnica, 56-400, Poland

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Olkusz, 32-300, Poland

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Pszczyna, 43-200, Poland

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Słupsk, 76-200, Poland

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Tczew, 83-110, Poland

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Wołomin, 05-200, Poland

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Wroclaw, 50-981, Poland

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Żory, 44-240, Poland

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Żyrardów, 96-300, Poland

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Kemerovo, 650000, Russia

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Mytischi, 141009, Russia

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Novosibirsk, 630087, Russia

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Omsk, 644112, Russia

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Penza, 440034, Russia

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Saint Petersburg, 190103, Russia

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Saint Petersburg, 191167, Russia

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Yaroslavl, 150062, Russia

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Bratislava, 85107, Slovakia

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Komárno, 945 75, Slovakia

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Košice, 04011, Slovakia

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Lučenec, 984 01, Slovakia

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Púchov, 2001, Slovakia

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Žilina, 010 01, Slovakia

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Alcalá de Henares, 28805, Spain

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Barcelona, 08025, Spain

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Córdoba, 14004, Spain

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Madrid, 28006, Spain

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Madrid, 28007, Spain

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Madrid, 28031, Spain

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Pamplona, 31008, Spain

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Valencia, 46017, Spain

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Kaohsiung City, Taiwan

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Keelung, 20448, Taiwan

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Linkou District, 244, Taiwan

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New Taipei City, 220, Taiwan

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New Taipei City, 23561, Taiwan

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Taichung, 40705, Taiwan

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Taipei, 100, Taiwan

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Taipei, 110, Taiwan

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Taipei, 114, Taiwan

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Bangkok, 10330, Thailand

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Chiang Mai, 50200, Thailand

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Hat Yai, 90110, Thailand

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Ratchathewi, 10400, Thailand

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Adapazarı, 54100, Turkey (Türkiye)

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Ankara, 06800, Turkey (Türkiye)

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Gaziantep, 27310, Turkey (Türkiye)

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Kahramanmaraş, 46100, Turkey (Türkiye)

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Kayseri, 38039, Turkey (Türkiye)

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Kocaeli, 41380, Turkey (Türkiye)

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Chernivtsі, 58001, Ukraine

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Dnipro, 49005, Ukraine

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Ivano-Frankivsk, 78018, Ukraine

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Kyiv, 01004, Ukraine

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Kyiv, 02125, Ukraine

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Kyiv, 03680, Ukraine

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Kyiv, 04107, Ukraine

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Odesa, 65074, Ukraine

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Ternopil, 46001, Ukraine

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Uzhhorod, 88018, Ukraine

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Vinnytsia, 21018, Ukraine

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Zaporizhzhia, 69001, Ukraine

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Zaporizhzhia, 69600, Ukraine

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Bristol, BS105NB, United Kingdom

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Leicester, LE5 4PW, United Kingdom

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Liverpool, L9 7AL, United Kingdom

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London, E1 1BB, United Kingdom

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London, SE1 2PR, United Kingdom

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Preston, PR2 9HT, United Kingdom

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Salford, M6 8HD, United Kingdom

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Swansea, SN6 6NL, United Kingdom

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Wolverhampton, WV10 OQP, United Kingdom

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Biên Hòa, 810000, Vietnam

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Da Nang, 55000, Vietnam

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Hanoi, 100000, Vietnam

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Hanoi, 10000, Vietnam

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Ho Chi Minh City, 10000, Vietnam

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Ho Chi Minh City, 700000, Vietnam

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Ho Chi Minh City, 70000, Vietnam

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Huế, 530000, Vietnam

Location

Related Publications (2)

  • Fishbane S, Dember LM, Jadoul M, Kovesdy CP, Guzman N, Kordzakhia G, Lisovskaja V, Sekar P, Wessman P, Al-Shurbaji A, Herzog CA. The randomized DIALIZE-Outcomes trial evaluated sodium zirconium cyclosilicate in hemodialysis. Kidney Int. 2025 Oct;108(4):686-694. doi: 10.1016/j.kint.2025.06.016. Epub 2025 Jul 4.

  • Fishbane S, Jadoul M, Dember L, Kovesdy CP, Al-Shurbaji A, Lisovskaja V, Sekar P, Katona B, Guzman N, Herzog C. Evaluation of the effect of sodium zirconium cyclosilicate on arrhythmia-related cardiovascular outcomes in patients receiving chronic haemodialysis with hyperkalaemia: protocol for the multicentre, randomised, controlled DIALIZE-Outcomes study. BMJ Open. 2023 May 25;13(5):e071309. doi: 10.1136/bmjopen-2022-071309.

Related Links

MeSH Terms

Conditions

HyperkalemiaAtrial FibrillationTachycardia, Ventricular

Interventions

sodium zirconium cyclosilicate

Condition Hierarchy (Ancestors)

Water-Electrolyte ImbalanceMetabolic DiseasesNutritional and Metabolic DiseasesArrhythmias, CardiacHeart DiseasesCardiovascular DiseasesPathologic ProcessesPathological Conditions, Signs and SymptomsTachycardiaCardiac Conduction System Disease

Limitations and Caveats

Study was terminated early due to lower-than-expected primary event rate and higher than anticipated drop-out rate. Lower number of evaluable events reduces the precision of the primary analysis considerably.

Results Point of Contact

Title
Global Clinical Lead
Organization
AstraZeneca

Study Officials

  • Steven Fishbane, Professor, MD

    North Shore University Hospital, 300 Community Drive, Manhasset, NY 11030

    PRINCIPAL INVESTIGATOR

Publication Agreements

PI is Sponsor Employee
No
Restrictive Agreement
Yes

Study Design

Study Type
interventional
Phase
phase 3
Allocation
RANDOMIZED
Masking
QUADRUPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
INDUSTRY
Responsible Party
SPONSOR

Study Record Dates

First Submitted

April 8, 2021

First Posted

April 19, 2021

Study Start

April 30, 2021

Primary Completion

March 7, 2024

Study Completion

March 7, 2024

Last Updated

June 18, 2025

Results First Posted

June 18, 2025

Record last verified: 2025-06

Data Sharing

IPD Sharing
Will share

Qualified researchers can request access to anonymized individual patient-level data from AstraZeneca group of companies sponsored clinical trials via the request portal. All request will be evaluated as per the AZ disclosure commitment: https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure Yes, indicates that AZ are accepting requests for IPD, but this does not mean all requests will be shared.

Shared Documents
STUDY PROTOCOL, SAP
Time Frame
AstraZeneca will meet or exceed data availability as per the commitments made to the EFPIA Pharma Data Sharing Principles. For details of our timelines, please rerefer to our disclosure commitment at https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure
Access Criteria
When a request has been approved AstraZeneca will provide access to the de-identified individual patient-level data in an approved sponsored tool. Signed Data Sharing Agreement (non-negotiable contract for data accessors) must be in place before accessing requested information. Additionally, all users will need to accept the terms and conditions of the SAS MSE to gain access. For additional details, please review the Disclosure Statements at https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure
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