Neurology
Published
Chronic Inflammatory Demyelinating Polyneuropathy — Epidemiological Registry
134,448 patients · tertiary/quaternary healthcare centers
Omega’s largest patient enrollment study
Real-world data generation in a rare neurological disease population
Multi-center, longitudinal patient follow-up design
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Cardiovascular
Published
Essential Hypertension Prognostic Risk Observational Study
46,813 patients · 275 centers
Simultaneous data collection across 275 centers — large-scale field operations across Türkiye
Population-based risk stratification and prognostic modeling
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Vaccines & Infectious Disease
Published
CoronaVac Phase 3 — Inactivated SARS-CoV-2 Vaccine
10,214 participants · 25 centers · Phase 3
Vaccine efficacy 83.5% — published in The Lancet (2021)
Entire operation from design to IWRS randomization ran in-house at Omega
Underpinned the emergency use authorization (Jan 13, 2021)
Publication: The Lancet (2021)
Vaccine details →
Cardiovascular
Published
National Hypertension Prevalence Monitoring Study
31,837 volunteers · across Türkiye
A national study that systematically measured blood pressure prevalence across Türkiye
Generated data that directly informed public health policy
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Other
Published
Dialysis Registry — National Kidney Registry Study
25,000 patients · 390 centers
390 centers — Omega’s broadest site network
Long-term longitudinal data on chronic kidney disease management
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Vaccines & Infectious Disease
Published
TURKOVAC Booster Dose — Phase 2 & AE Analysis
4,340 patients · 41 centers (booster) + 1,266 patients (AE)
Marked neutralizing antibody superiority against the Delta variant
Two peer-reviewed publications (2022, 2024) + first domestic vaccine EUA evidence (Dec 22, 2021)
Publication: Vaccines (2022)
Vaccine details →
Respiratory
Published
GSK BREATHE — MENA Regional COPD Prevalence Survey (Türkiye Arm)
General population aged ≥40 · 11 countries · 62,086 participants
For the GSK-supported survey run with a standardised methodology across 10 MENA countries plus Pakistan, Omega delivered the Türkiye arm — field operations, telephone interviews and medical translation
62,086 participants; regional COPD prevalence 3.6% (Tageldin et al.) — design paper El Hasnaoui et al., Respir Med (2012)
Satellite publications with Turkish respiratory investigators (Uzaslan, Sayiner) on symptom distribution, disease burden and CAT validation
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Immunology
Published
GSK SNAPSHOT Program — Prevalence of Asthma, Allergic Rhinitis, Bipolar Disorder & BPH
9,959 participants (Türkiye) · 33,486 participants / 5 countries · cross-sectional epidemiological
Türkiye asthma prevalence 4.4% — BMC Pulmonary Medicine (2018); allergic rhinitis 6.4% — Allergy, Asthma & Clinical Immunology (2018)
The single program measuring asthma, allergic rhinitis, bipolar disorder and BPH together in one general-population sample
Omega scope (2014–2015): ethics committee submissions, field operations, phone visits, training and medical translation
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Cardiovascular
Published
Coronary Care Unit — Acute Myocardial Infarction Registry
1,945 patients · 53 centers
National-level assessment of acute MI management
Cross-center comparison of coronary care quality
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Oncology
Published
NSCLC Stage III — Radiosensitizer Phase 3
659 patients · 100 centers · Phase 3
Randomized controlled oncology trial across 100 centers — operational scale
Advanced-stage patient enrollment and follow-up in radiation oncology
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Logistics & Depot
Published
MoH Smoking Cessation Program Logistics
340,000 IMPs · 227 sites · 81 cities
The only organization to provide depot and distribution services for the project
Uninterrupted cold chain and delivery coordination across the country
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Metabolism & Endocrine
Published
Türkiye Metabolic Syndrome Epidemiological Study (MetSend)
7,500 volunteers · 15 centers · epidemiological
A landmark study determining metabolic syndrome prevalence across Türkiye
A national dataset that shaped cardiometabolic risk management
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Respiratory
Published
Tiotropium COPD Phase 3 — BIFIZ-2
6,000 patients · 500 centers · randomized Phase 3
500 centers — end-to-end management of the Türkiye arm of an international multi-center Phase 3
Randomized, double-blind, placebo-controlled lung function cohort
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Cardiovascular
Published
Candesartan Pharmacovigilance — ATACAND-2 Phase 4
5,090 patients · 300 centers · Phase 4
Large-scale real-world safety data in essential hypertension
Comparative pharmacovigilance across monotherapy and combination therapy
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Oncology
Published
Breast Cancer Screening Program — METAR
5,000 participants · national screening program
A community-based breast cancer screening operation targeting early detection
Management of screening participation and access logistics
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Immunology
Published
EuroSpA — Biologic Therapy Registry in Inflammatory Rheumatic Disease
4,100 patients · 15 centers · international registry network
Integration of Türkiye data into the European EuroSpA research consortium
Monitoring of efficacy, safety and drug survival on biologic therapy
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Cardiovascular
Published
HITIP — Hyperlipidemia Treatment Patterns in Türkiye
4,226 patients · 362 centers · 1997
A wide-site-network indicative study dating from Omega’s early years
A national snapshot of lipid management in the pre-atorvastatin era
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Immunology
Published
Atopic Dermatitis Patient Journey Registry (PF-NIS-AD)
5,000 patients · observational dermatology
Türkiye’s comprehensive patient journey registry for diagnosed atopic dermatitis
Real-world clinical practice data from diagnosis to treatment
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Metabolism & Endocrine
Published
EASYDIA — Sulfonylurea Effectiveness in Type 2 Diabetes
3,123 patients · 225 centers · observational
Comparative real-world evidence across monotherapy and dual combination
A broad network spanning primary and secondary care clinics
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Cardiovascular
Published
SALTURK — Hypertension and Salt Intake in the Turkish Population
1,970 target participants · 14 centers · 24-hour urinary sodium
Omega ran the field operations for the Turkish Hypertension and Kidney Diseases Association study
Daily salt intake ≈18 g (24-h urinary sodium 308.3 mmol/day) — ~3.6× the WHO recommendation; salt intake positively correlated with blood pressure
Erdem et al., Blood Pressure (2010) — cited 250+ times
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Cardiovascular
Published
SALTURK II — Dietary Sources of High Sodium Intake in Türkiye
National cross-sectional · 24-hour urinary sodium · dietary source analysis
The SALTURK follow-up: daily salt intake 14.8 g/day — still ~3× the WHO recommendation
Quantified the dietary sources of high sodium intake (bread first) nationally — the evidence base for salt-reduction policies
Erdem et al., Nutrients (2017)
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Other
Published
CREDIT — Chronic Kidney Disease Prevalence in Türkiye
10,748 adults · 15-25 centers · prevalence + 4-year follow-up
With the Turkish Nephrology Association: CKD prevalence in Türkiye 15.7% (women 18.4% / men 12.8%)
A 4-year incidence follow-up layered on the prevalence cross-section — Türkiye’s national CKD data infrastructure
Süleymanlar et al., Nephrology (Carlton) (2010) — cited 600+ times
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Other
Published
Türkiye Erectile Dysfunction Prevalence Study — ED
4,200 men · 1997-98 · national epidemiological field study
One of the first national ED prevalence field studies, run in Omega’s founding years
Age-adjusted ED prevalence 69.2% (mild 33.2% · moderate 27.5% · severe 8.5%); prevalence and severity increase with age
Akkus et al., European Urology (2002) — cited 460+ times
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Other
Anonymized
BPH-Prev — Benign Prostatic Hyperplasia Prevalence in Türkiye
Epidemiological field study · urology · men aged 40+
One of the few studies measuring the national BPH/LUTS burden in adult men with field data
Field operations and data management with the urology clinical epidemiology group ran at Omega
Anonymized cards are presented without sponsor names or specific study data due to confidentiality obligations. Detailed references are available on request.