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A study to identify blood tests that can predict formation of blood clots in healthy males when exposed to high altitude.

Study of predictive biomarkers contributing to development of vascular thrombosis on high altitude exposure in fully acclimatized healthy young males - NIL

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
CTRI
Registry ID
CTRI/2026/04/109245
Enrollment
5000
Registered
2026-04-23
Start date
Unknown
Completion date
Unknown
Last updated
2026-09-14

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Interventions

Intervention1: Nil: Nil Intervention2: Nil: Nil Intervention3: Nil: Nil

Sponsors

ICMR
Lead Sponsor

Eligibility

Inclusion criteria

Inclusion criteria: 1. Male participants aged 18 to 60 years 2. Healthy individuals with no known pre-existing medical conditions as determined by study screening 3. Individuals scheduled to stay at high altitude for a minimum duration of 07 days 4. Willing and able to provide written informed consent

Exclusion criteria

Exclusion criteria: 1. Inability or unwillingness to provide informed consent 2. History of pre-existing vascular thrombosis 3. Known hemoglobinopathies (e.g., sickle cell disease, thalassemia) 4. Pre-existing hypertension diagnosed prior to induction into high altitude 5. Pre-existing diabetes mellitus diagnosed prior to induction into high altitude 6. Dyslipidemia requiring medical management 7. Pre-existing renal disease (including chronic kidney disease or significant renal impairment)

Design outcomes

Primary

MeasureTime frame
Incidence of vascular thrombosis (including venous and arterial thrombotic events) in participants during high altitude exposure, confirmed by clinical,laboratory and radiological evaluationTimepoint: Predefined time points: At baseline T1 taken at sea level prior to induction to High Altitude (HA); T2 taken at 6 days post induction to HA. T3 and T4 taken at 90 and 180 days post induction respectively. T5 sample is taken at time of de-induction from HA.

Secondary

MeasureTime frame
Changes in hematological and coagulation biomarkers during high altitude exposureTimepoint: At predefined time points T1 to T5 during follow up;Association between baseline biomarker levels and subsequent development of vascular thrombosisTimepoint: Baseline assessment and follow up up to 24 months;Comparison of biomarker profiles between participants who develop thrombosis and those who do notTimepoint: At time of event and corresponding matched time points in controls;Temporal changes in biomarker levels in response to high altitude exposureTimepoint: Serial measurements from baseline through all follow up visits (T1 to T5)

Countries

India

Contacts

Public ContactDr Sanjeevan Sharma

153 General Hospital Leh

majrkapoor@gmail.com7042853310

Outcome results

None listed

Source: CTRI (via WHO ICTRP) · Data processed: Sep 19, 2026