Not medical advice. This website is not medical advice, a diagnosis, a match to a trial, or a recommendation to join a study. Listings are plain-English rewrites of public ClinicalTrials.gov records. Whether a site is still enrolling, and whether you qualify, can only be confirmed by the study team and your clinician. Source registry: ClinicalTrials.gov. Editorial rules: methodology.

Home / Locations

Cities listed on recruiting records

A city on this list means at least two studies in the snapshot name a site there. Confirm with the NCT record that the site is still recruiting.

592 trials in snapshot

Seoul

South Korea

528 trials in snapshot

New York, New York

United States

472 trials in snapshot

Madrid

Spain

451 trials in snapshot

Houston, Texas

United States

376 trials in snapshot

Barcelona

Spain

349 trials in snapshot

Chicago, Illinois

United States

347 trials in snapshot

Miami, Florida

United States

333 trials in snapshot

Los Angeles, California

United States

333 trials in snapshot

London

United Kingdom

332 trials in snapshot

Beijing

China

332 trials in snapshot

Las Vegas, Nevada

United States

313 trials in snapshot

Atlanta, Georgia

United States

312 trials in snapshot

Boston, Massachusetts

United States

303 trials in snapshot

Shanghai, Shanghai Municipality

China

298 trials in snapshot

St Louis, Missouri

United States

294 trials in snapshot

Dallas, Texas

United States

284 trials in snapshot

Milan

Italy

263 trials in snapshot

São Paulo, São Paulo

Brazil

256 trials in snapshot

Taipei

Taiwan

252 trials in snapshot

Philadelphia, Pennsylvania

United States

246 trials in snapshot

Buenos Aires., Buenos Aires

Argentina

243 trials in snapshot

Columbus, Ohio

United States

242 trials in snapshot

Paris

France

238 trials in snapshot

Warsaw

Poland

237 trials in snapshot

Guangzhou

China

225 trials in snapshot

Seattle, Washington

United States

225 trials in snapshot

Toronto, Ontario

Canada

214 trials in snapshot

Portland, Oregon

United States

209 trials in snapshot

San Antonio, Texas

United States

208 trials in snapshot

Tampa, Florida

United States

207 trials in snapshot

Baltimore, Maryland

United States

207 trials in snapshot

Nashville, Tennessee

United States

206 trials in snapshot

Budapest

Hungary

204 trials in snapshot

Cincinnati, Ohio

United States

203 trials in snapshot

Pittsburgh, Pennsylvania

United States

203 trials in snapshot

Berlin, State of Berlin

Germany

200 trials in snapshot

Montreal, Quebec

Canada

199 trials in snapshot

Athens, Attica

Greece

198 trials in snapshot

Bucharest

Romania

198 trials in snapshot

Hangzhou, Zhejiang

China

191 trials in snapshot

Ankara

Turkey (Türkiye)

185 trials in snapshot

Sofia

Bulgaria

183 trials in snapshot

Orlando, Florida

United States

183 trials in snapshot

Santiago, Region M. de Santiago

Chile

178 trials in snapshot

Porto Alegre, Rio Grande do Sul

Brazil

173 trials in snapshot

Prague

Czechia

170 trials in snapshot

Bethesda, Maryland

United States

168 trials in snapshot

Omaha, Nebraska

United States

164 trials in snapshot

Honolulu, Hawaii

United States

162 trials in snapshot

Austin, Texas

United States

160 trials in snapshot

Phoenix, Arizona

United States

160 trials in snapshot

Istanbul

Turkey (Türkiye)

159 trials in snapshot

Chengdu, Sichuan

China

158 trials in snapshot

Valencia

Spain

155 trials in snapshot

Indianapolis, Indiana

United States

155 trials in snapshot

Minneapolis, Minnesota

United States

154 trials in snapshot

Changsha, Hunan

China

153 trials in snapshot

Richmond, Virginia

United States

151 trials in snapshot

San Francisco, California

United States

149 trials in snapshot

Cleveland, Ohio

United States

146 trials in snapshot

Wuhan, Hubei

China

145 trials in snapshot

Roma

Italy

143 trials in snapshot

Seville, Sevilla

Spain

142 trials in snapshot

Jacksonville, Florida

United States

142 trials in snapshot

Nanjing, Jiangsu

China

140 trials in snapshot

Aurora, Colorado

United States

139 trials in snapshot

Des Moines, Iowa

United States

139 trials in snapshot

Oklahoma City, Oklahoma

United States

137 trials in snapshot

Ann Arbor, Michigan

United States

134 trials in snapshot

Poznan, Greater Poland Voivodeship

Poland

133 trials in snapshot

Sacramento, California

United States

131 trials in snapshot

Detroit, Michigan

United States

130 trials in snapshot

Milwaukee, Wisconsin

United States

130 trials in snapshot

Krakow, Lesser Poland Voivodeship

Poland

129 trials in snapshot

Denver, Colorado

United States

126 trials in snapshot

Rosario, Santa Fe Province

Argentina

125 trials in snapshot

Flint, Michigan

United States

123 trials in snapshot

Salt Lake City, Utah

United States

123 trials in snapshot

Mexico City, Mexico City

Mexico

121 trials in snapshot

New Haven, Connecticut

United States

121 trials in snapshot

Louisville, Kentucky

United States

120 trials in snapshot

Birmingham, Alabama

United States

120 trials in snapshot

San Diego, California

United States

119 trials in snapshot

Taichung

Taiwan

118 trials in snapshot

Charlotte, North Carolina

United States

116 trials in snapshot

Durham, North Carolina

United States

116 trials in snapshot

Springfield, Illinois

United States

116 trials in snapshot

Jerusalem

Israel

114 trials in snapshot

Tucson, Arizona

United States

113 trials in snapshot

Lisbon, Lisbon District

Portugal

111 trials in snapshot

Greenville, South Carolina

United States

110 trials in snapshot

Fargo, North Dakota

United States

109 trials in snapshot

Washington D.C., District of Columbia

United States

109 trials in snapshot

Rome

Italy

109 trials in snapshot

Lexington, Kentucky

United States

109 trials in snapshot

Córdoba

Argentina

108 trials in snapshot

Anchorage, Alaska

United States

108 trials in snapshot

Haifa

Israel

107 trials in snapshot

Toulouse

France

105 trials in snapshot

Rochester, Minnesota

United States

105 trials in snapshot

Kansas City, Missouri

United States

105 trials in snapshot

Marseille

France

104 trials in snapshot

Naples

Italy

104 trials in snapshot

Osaka

Japan

103 trials in snapshot

Grand Rapids, Michigan

United States

102 trials in snapshot

The Bronx, New York

United States

102 trials in snapshot

Jinan, Shandong

China

101 trials in snapshot

Sapporo, Hokkaido

Japan

101 trials in snapshot

Tianjin, Tianjin Municipality

China

100 trials in snapshot

Nanchang, Jiangxi

China

100 trials in snapshot

Wroclaw, Lower Silesian Voivodeship

Poland

99 trials in snapshot

San Juan

Puerto Rico

99 trials in snapshot

Tainan

Taiwan

98 trials in snapshot

Xi'an, Shaanxi

China

98 trials in snapshot

Albuquerque, New Mexico

United States

97 trials in snapshot

Chongqing, Chongqing Municipality

China

96 trials in snapshot

Lyon

France

96 trials in snapshot

Melbourne, Victoria

Australia

96 trials in snapshot

Yokohama, Kanagawa

Japan

96 trials in snapshot

Tbilisi

Georgia

95 trials in snapshot

Changchun, Jilin

China

93 trials in snapshot

Leuven, Vlaams-Brabant

Belgium

93 trials in snapshot

Málaga

Spain

93 trials in snapshot

Colorado Springs, Colorado

United States

92 trials in snapshot

Charleston, South Carolina

United States

92 trials in snapshot

New Orleans, Louisiana

United States

92 trials in snapshot

Brussels

Belgium

92 trials in snapshot

Orange, California

United States

92 trials in snapshot

Edmonton, Alberta

Canada

91 trials in snapshot

Hamburg

Germany

91 trials in snapshot

Fukuoka

Japan

91 trials in snapshot

Thessaloniki

Greece

91 trials in snapshot

Singapore, Central Singapore

Singapore

90 trials in snapshot

Sioux Falls, South Dakota

United States

90 trials in snapshot

Kaohsiung City

Taiwan

89 trials in snapshot

Fort Worth, Texas

United States

88 trials in snapshot

Little Rock, Arkansas

United States

88 trials in snapshot

Ghent

Belgium

87 trials in snapshot

Dayton, Ohio

United States

86 trials in snapshot

Lublin

Poland

85 trials in snapshot

La Jolla, California

United States

85 trials in snapshot

Caba, Buenos Aires

Argentina

84 trials in snapshot

Madison, Wisconsin

United States

84 trials in snapshot

Brno

Czechia

84 trials in snapshot

Fuzhou, Fujian

China

84 trials in snapshot

Fairfax, Virginia

United States

83 trials in snapshot

Montpellier

France

83 trials in snapshot

Ramat Gan

Israel

83 trials in snapshot

Leipzig, Saxony

Germany

82 trials in snapshot

Irvine, California

United States

82 trials in snapshot

Tel Aviv

Israel

82 trials in snapshot

Tokyo

Japan

81 trials in snapshot

Lille

France

81 trials in snapshot

Lodz, Łódź Voivodeship

Poland

80 trials in snapshot

Vancouver, British Columbia

Canada

80 trials in snapshot

Kyiv, Kyivska Oblast

Ukraine

79 trials in snapshot

Amsterdam

Netherlands

79 trials in snapshot

London, Ontario

Canada

79 trials in snapshot

Zhengzhou, Henan

China

79 trials in snapshot

Bangkok, Bangkok

Thailand

78 trials in snapshot

Calgary, Alberta

Canada

78 trials in snapshot

Charlottesville, Virginia

United States

76 trials in snapshot

Chapel Hill, North Carolina

United States

76 trials in snapshot

Pontiac, Michigan

United States

76 trials in snapshot

Rio de Janeiro

Brazil

75 trials in snapshot

Vienna

Austria

75 trials in snapshot

Monterrey, Nuevo León

Mexico

75 trials in snapshot

Belgrade

Serbia

74 trials in snapshot

Rochester, New York

United States

74 trials in snapshot

Henderson, Nevada

United States

73 trials in snapshot

Saint Paul, Minnesota

United States

73 trials in snapshot

Billings, Montana

United States

73 trials in snapshot

Green Bay, Wisconsin

United States

73 trials in snapshot

Duarte, California

United States

73 trials in snapshot

Nagoya

Japan

73 trials in snapshot

Walnut Creek, California

United States

73 trials in snapshot

Memphis, Tennessee

United States

72 trials in snapshot

Guadalajara, Jalisco

Mexico

72 trials in snapshot

Shenyang, Liaoning

China

72 trials in snapshot

Katowice

Poland

71 trials in snapshot

Kalamazoo, Michigan

United States

70 trials in snapshot

Hefei, Anhui

China

70 trials in snapshot

Lima

Peru

70 trials in snapshot

Bydgoszcz, Kuyavian-Pomeranian Voivodeship

Poland

69 trials in snapshot

Boise, Idaho

United States

69 trials in snapshot

Cluj-Napoca, Cluj

Romania

69 trials in snapshot

Adana

Turkey (Türkiye)

68 trials in snapshot

Daegu, Taegu-Kwangyokshi

South Korea

67 trials in snapshot

Gainesville, Florida

United States

67 trials in snapshot

Petah Tikva

Israel

67 trials in snapshot

Newark, Delaware

United States

66 trials in snapshot

Effingham, Illinois

United States

66 trials in snapshot

Scottsdale, Arizona

United States

66 trials in snapshot

Essen

Germany

66 trials in snapshot

Curitiba, Paraná

Brazil

66 trials in snapshot

Porto

Portugal

66 trials in snapshot

Liège

Belgium

65 trials in snapshot

Reno, Nevada

United States

65 trials in snapshot

New Delhi, National Capital Territory of Delhi

India

64 trials in snapshot

Winston-Salem, North Carolina

United States

64 trials in snapshot

Providence, Rhode Island

United States

64 trials in snapshot

Decatur, Illinois

United States

64 trials in snapshot

Edina, Minnesota

United States

64 trials in snapshot

Villejuif

France

64 trials in snapshot

München

Germany

64 trials in snapshot

Bialystok, Podlaskie Voivodeship

Poland

63 trials in snapshot

Warren, Michigan

United States

63 trials in snapshot

Springfield, Missouri

United States

63 trials in snapshot

Québec, Quebec

Canada

62 trials in snapshot

Peoria, Illinois

United States

62 trials in snapshot

Rozzano, Milano

Italy

62 trials in snapshot

Florence, Tuscany

Italy

61 trials in snapshot

Ypsilanti, Michigan

United States

61 trials in snapshot

Münster

Germany

60 trials in snapshot

Missoula, Montana

United States

59 trials in snapshot

Hamilton, Ontario

Canada

59 trials in snapshot

Nice, Alpes-Maritimes

France

59 trials in snapshot

Taoyuan

Taiwan

58 trials in snapshot

Spokane, Washington

United States

58 trials in snapshot

Brighton, Michigan

United States

58 trials in snapshot

Dresden

Germany

58 trials in snapshot

Manchester, England

United Kingdom

58 trials in snapshot

Plovdiv, Bulgaria

Bulgaria

57 trials in snapshot

Baton Rouge, Louisiana

United States

57 trials in snapshot

Bordeaux, Gironde

France

57 trials in snapshot

Salvador, Estado de Bahia

Brazil

56 trials in snapshot

Buffalo, New York

United States

56 trials in snapshot

Sheboygan, Wisconsin

United States

56 trials in snapshot

Gdansk

Poland

56 trials in snapshot

Adelaide, South Australia

Australia

56 trials in snapshot

Shenzhen, Guangdong

China

56 trials in snapshot

Ningbo, Zhejiang

China

55 trials in snapshot

Kansas City, Kansas

United States

55 trials in snapshot

New Brunswick, New Jersey

United States

55 trials in snapshot

Nantes

France

55 trials in snapshot

Royal Oak, Michigan

United States

55 trials in snapshot

A Coruña

Spain

54 trials in snapshot

Dublin, Leinster

Ireland

54 trials in snapshot

Busan

South Korea

54 trials in snapshot

Wenzhou, Zhejiang

China

53 trials in snapshot

Palo Alto, California

United States

53 trials in snapshot

Nampa, Idaho

United States

53 trials in snapshot

Debrecen, Hajdu Bihar Megye

Hungary

53 trials in snapshot

Bogotá, Bogota D.C.

Colombia

53 trials in snapshot

Duluth, Minnesota

United States

52 trials in snapshot

Iowa City, Iowa

United States

52 trials in snapshot

Shijiazhuang, Hebei

China

52 trials in snapshot

Hong Kong

Hong Kong

52 trials in snapshot

Santa Rosa, California

United States

52 trials in snapshot

Ho Chi Minh City

Vietnam

52 trials in snapshot

Miami Lakes, Florida

United States

51 trials in snapshot

Canton, Michigan

United States

51 trials in snapshot

Chelsea, Michigan

United States

51 trials in snapshot

Rotterdam, South Holland

Netherlands

51 trials in snapshot

Bologna

Italy

51 trials in snapshot

Fresno, California

United States

51 trials in snapshot

Ottawa, Ontario

Canada

51 trials in snapshot

Sendai, Miyagi

Japan

51 trials in snapshot

Kumamoto

Japan

51 trials in snapshot

Timișoara, Timiș County

Romania

50 trials in snapshot

Tacoma, Washington

United States

50 trials in snapshot

Harbin, Heilongjiang

China

50 trials in snapshot

Kuala Lumpur

Malaysia

50 trials in snapshot

Cape Town, Western Cape

South Africa

50 trials in snapshot

Long Beach, California

United States

50 trials in snapshot

Szczecin

Poland

49 trials in snapshot

St. Petersburg, Florida

United States

49 trials in snapshot

Urbana, Illinois

United States

49 trials in snapshot

Maplewood, Minnesota

United States

49 trials in snapshot

Santander

Spain

49 trials in snapshot

Suwon, Kyonggi-do

South Korea

49 trials in snapshot

Savannah, Georgia

United States

49 trials in snapshot

‘Aiea, Hawaii

United States

49 trials in snapshot

Belo Horizonte, Minas Gerais

Brazil

49 trials in snapshot

Raleigh, North Carolina

United States

49 trials in snapshot

Zagreb

Croatia

49 trials in snapshot

Natal, Rio Grande do Norte

Brazil

48 trials in snapshot

Fort Lauderdale, Florida

United States

48 trials in snapshot

Utrecht

Netherlands

48 trials in snapshot

Glasgow

United Kingdom

48 trials in snapshot

Tulsa, Oklahoma

United States

48 trials in snapshot

Mar del Plata, Buenos Aires

Argentina

48 trials in snapshot

Dijon, Cote-d Or

France

48 trials in snapshot

Izmir

Turkey (Türkiye)

48 trials in snapshot

Fort Collins, Colorado

United States

48 trials in snapshot

Cedar Rapids, Iowa

United States

48 trials in snapshot

Suzhou, Jiangsu

China

47 trials in snapshot

Rennes

France

47 trials in snapshot

Kyoto

Japan

47 trials in snapshot

São José do Rio Preto, São Paulo

Brazil

47 trials in snapshot

Strasbourg, Alsace

France

47 trials in snapshot

Hanover, Lower Saxony

Germany

47 trials in snapshot

Seongnam-si, Kyonggi-do

South Korea

47 trials in snapshot

Fort Myers, Florida

United States

47 trials in snapshot

Syracuse, New York

United States

47 trials in snapshot

Sarasota, Florida

United States

47 trials in snapshot

Campinas

Brazil

47 trials in snapshot

Iași

Romania

47 trials in snapshot

Brasília, Federal District

Brazil

47 trials in snapshot

Nanning

China