Clinical trial Recruiting at 48 sites Observational Ages 18 and up

Registry of cancer patients with thromboembolism

Official title: Observational Epidemiological Study of Cancer-associated Thrombosis: Registry of Thrombosis & NEoplasia of SEOM (TESEO Study)

Run by Fundación Sociedad Española de Oncologia Médica · NCT03855592 · Data updated 2026-11-12

This study is looking to gather information on adults with cancer who have had blood clots to better understand how cancer and blood clots are connected.

More Thromboembolism trials

Quick facts

Study typeObservational
Ages18 Years and up
SexAll
Enrollment700 (estimated)
SponsorFundación Sociedad Española de Oncologia Médica
Academic / other
Locations48 sites (Alcoy, Alicante and 47 other locations)
StatusRecruiting
StartedJuly 4, 2018
Main results expectedJuly 2026
Study endsJuly 2026
Registry record updatedMay 16, 2025
Trial IDNCT03855592 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults over 18 with a confirmed diagnosis of cancer who have experienced a thromboembolic event.

Probably not a fit

Patients without a confirmed thromboembolic event or those with superficial thrombophlebitis alone will not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This observational study aims to collect data on patients diagnosed with cancer who experience venous or arterial thromboembolic events either prior to or following their cancer diagnosis. It is a multicentric study that will document these occurrences to better understand the relationship between cancer and thromboembolism. Patients over 18 years old with a confirmed malignant tumor and a documented thromboembolic episode will be included. The study will utilize imaging techniques for confirmation of thromboembolic events.

Why it matters

Potential benefit: If successful, this study could enhance understanding of thromboembolism in cancer patients, potentially leading to improved management and treatment strategies.

How similar studies have gone: While this study is observational and builds on existing knowledge, similar studies have shown the importance of understanding thromboembolic events in cancer patients, indicating potential for valuable insights.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Over 18 years of age with a histologically confirmed diagnosis of malignant tumor.
* Venous or arterial thromboembolism episode, symptomatic or incidental, in the month prior or any time after the cancer diagnosis and in the three previous months to enrollment, confirmed with an imaging technique: Doppler echocardiography, computed tomography (CT) angiography, etc.
* Signing of informed consent.

Exclusion Criteria:

* Clinical diagnosis of thromboembolic event without radiological confirmation.
* Presenting a single episode of superficial thrombophlebitis without association with another thromboembolic event.
* Each patient will be recorded just once, and therefore a second thromboembolic event will be considered a rethrombosis and will be recorded as such. Patients with a rethrombosis and a previous thromboembolic event before the start of the study in each center will not be able to be included.

Where it's running

  • Hospital Virgen de los Lirios
    Alcoy, Alicante, Spain
    Recruiting
  • Hospital Universitario de Torrevieja
    Elche, Alicante, Spain
    Recruiting
  • Hospital Son Espases
    Palma, Balearic Islands, Spain
    Recruiting
  • Institut Català D'Oncologia (ICO) L'Hospitalet
    L'Hospitalet de Llobregat, Barcelona, Spain
    Recruiting
  • Hospital Universitari Parc Taulí
    Sabadell, Barcelona, Spain
    Recruiting
  • Hospital De Sant Joan Despi Moissès Broggi
    Sant Joan Despí, Barcelona, Spain
    Recruiting
Show 42 more locations
  • Hospital Universitario Marqués de Valdecilla
    Santander, Cantabria, Spain
    Recruiting
  • Hospital de Especialidades de Jerez de la Frontera
    Jerez de la Frontera, Cádiz, Spain
    Recruiting
  • Complejo Hospitalario Univ. de Santiago
    Santiago de Compostela, La Coruña, Spain
    Recruiting
  • Hospital de Fuenlabrada
    Fuenlabrada, Madrid, Spain
    Recruiting
  • Hospital Universitario de Móstoles
    Móstoles, Madrid, Spain
    Recruiting
  • Hospital Infanta Cristina
    Parla, Madrid, Spain
    Recruiting
  • Complejo Hospitalario de Navarra
    Pamplona, Navarre, Spain
    Recruiting
  • Hospital Universitario Central de Asturias
    Oviedo, Principality of Asturias, Spain
    Recruiting
  • Complejo Hospitalario Universitario de A Coruña
    A Coruña, Spain
    Recruiting
  • Hospital Universitario San Juan de Alicante
    Alicante, Spain
    Recruiting
  • Hospital Univesitario Torrecárdenas
    Almería, Spain
    Recruiting
  • Complejo Hospitalario Universitario de Badajoz
    Badajoz, Spain
    Recruiting
  • Hospital Clínic Barcelona
    Barcelona, Spain
    Recruiting
  • Hospital de Barcelona
    Barcelona, Spain
    Recruiting
  • Hospital Universitario Vall d'Hebron
    Barcelona, Spain
    Recruiting
  • Hospital de Basurto
    Bilbao, Spain
    Recruiting
  • Hospital Universitario San Pedro de Alcántara
    Cáceres, Spain
    Recruiting
  • Hospital General Universitario de Ciudad Real
    Ciudad Real, Spain
    Recruiting
  • Hospital Universitario Reina Sofía
    Córdoba, Spain
    Recruiting
  • Hospital General Virgen de la Luz
    Cuenca, Spain
    Recruiting
  • Hospital General Universitario de Elche
    Elche, Spain
    Recruiting
  • Hospital Universitari Dr. Josep Trueta/Institut Català D'Oncología Girona
    Girona, Spain
    Recruiting
  • Hospital Universitario de Jaén
    Jaén, Spain
    Recruiting
  • Hospital Universitario Insular de Gran Canaria
    Las Palmas de Gran Canaria, Spain
    Recruiting
  • Hospital Universitario Lucus Augusti
    Lugo, Spain
    Recruiting
  • Hospital Central de la Defensa Gómez Ulla
    Madrid, Spain
    Recruiting
  • Hospital Fundación Jimenez Díaz
    Madrid, Spain
    Recruiting
  • Hospital MD Anderson Cancer Center Madrid
    Madrid, Spain
    Recruiting
  • Hospital Universitario 12 de Octubre
    Madrid, Spain
    Recruiting
  • Hospital Universitario Clínico San Carlos
    Madrid, Spain
    Recruiting
  • Hospital Universitario Gregorio Marañón
    Madrid, Spain
    Recruiting
  • Hospital Universitario Infanta Leonor
    Madrid, Spain
    Recruiting
  • Hospital Universitario La Paz
    Madrid, Spain
    Recruiting
  • Hospital Universitario la Princesa
    Madrid, Spain
    Recruiting
  • Hospital Universitario Ramón y Cajal
    Madrid, Spain
    Recruiting
  • Hospital Universitario Morales Meseguer
    Murcia, Spain
    Recruiting
  • Hospital Universitario Infanta Sofía
    San Sebastián de los Reyes, Spain
    Recruiting
  • Oncoavanze
    Seville, Spain
    Recruiting
  • Consorcio Hospital General Universitario de Valencia
    Valencia, Spain
    Recruiting
  • Hospital Clínico Universitario de Valencia
    Valencia, Spain
    Recruiting
  • Hospital Universitari i Politècnic La Fe
    Valencia, Spain
    Recruiting
  • Hospital Álvaro Cunqueiro
    Vigo, Spain
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.