- [Home](/) › - [ClinicalTrialStartPulse](/v/clinicaltrialstartpulse) › - [Hubs](/hub/clinicaltrialstartpulse) › - Observational # ClinicalTrialStartPulse: Observational **1,999 clinicalTrialStartPulse: Observational are listed from ClinicalTrials.gov (U.S. National Library of Medicine) API v2, dated 2026-09-14 to 2026-11-02; the most frequent is AstraZeneca with 24. Data last updated 2026-11-03; each record links to its official source and a full report.** Data as of 2026-11-03 · [Compiled by Zalwin](/research/clinicaltrialstartpulse) from ClinicalTrials.gov (U.S. National Library of Medicine) API v2 Copy citation Download the newest 500 clinicalTrialStartPulse: Observational (CSV) — $4.99 → Includes: Sponsor, Phase, Conditions, Enrollment, Countries, Event, Posted, official source URL and score · Card, Apple Pay, Google Pay or Link via Stripe [Free sample: 3 records (CSV)](/v1/verticals/clinicaltrialstartpulse/records.csv?phase=OBSERVATIONAL) 1,999 records from ClinicalTrials.gov (U.S. National Library of Medicine) API v2 (the 500 newest are listed here), dated 2026-09-14 to 2026-11-02. Most frequent: AstraZeneca (24). Each record links to a full report and the official source. Last updated 2026-11-03. Source: ClinicalTrials.gov (U.S. National Library of Medicine) API v2. **Search, filter and export ClinicalTrialStartPulse records** [Run instant live search with these filters](/v/clinicaltrialstartpulse?phase=OBSERVATIONAL&channel=pseo#vt-out) [Download free 3-row sample CSV](/v1/verticals/clinicaltrialstartpulse/records.csv?phase=OBSERVATIONAL) Unlock the full CSV for these filters — $4.99 → ✓ Read-only, live public data · Key and unlock right after payment · Card, Apple Pay, Google Pay or Link via Stripe · Refunds on request within 14 days ## Get new ClinicalTrialStartPulse records by email (free, weekly) We email one confirmation link now; the weekly digest starts only after you confirm. One-click unsubscribe in every email. Double opt-in: nothing is sent until you click the confirmation link. One-click unsubscribe. [See this week's digest](/digest/clinicaltrialstartpulse) Records 1,999 Most frequent - AstraZeneca (24) - Assiut University (15) - Pfizer (11) - Sanofi (9) - Assistance Publique - Hôpitaux de Paris (7) ## How do I get new clinicalTrialStartPulse: Observational by email? Search, filter and export these records, or get alerts when new ones appear. [Search and filter](/v/clinicaltrialstartpulse?phase=OBSERVATIONAL) [Watch this exact filter](/v/clinicaltrialstartpulse?phase=OBSERVATIONAL#more-ways) [See alert plans](/v/clinicaltrialstartpulse#pricing) ## What are the top clinicalTrialStartPulse: Observational right now? | Record | Phase | Conditions | Enrollment | |---|---|---|---| | Calyxo, Inc. | Observational | Urolithiasis; Stones, Kidney; Renal Stones; Kidney Stones | 1000 | | Hoffmann-La Roche | Observational | Relapsing-Remitting Multiple Sclerosis | 1800 | | Restor3D | Observational | Joint Replacement; Arthropathy | 2250 | | Kardium Inc. | Observational | Atrial Fibrillation | 500 | | Lumicell, Inc. | Observational | Breast Cancer | 1500 | | Lumicell, Inc. | Observational | Hypersensitivity Reactions | 1500 | | Vascutek Ltd. | Observational | Aortic Aneurysm and Dissection | 150 | | HALEON | Observational | Pain | 2100 | | AbbVie | Observational | Ulcerative Colitis (UC) | 8250 | | Zoll Medical Corporation | Observational | Central Sleep Apnea (Diagnosis); Central Sleep Apnea Syndrome; Central Sleep Apnea; Phrenic Nerve Stimulation; Sleep Disordered Breathing (SDB); Sleep Apnea, Central | 300 | | Abbott Point of Care | Observational | Lactate | 425 | | Ahn-Gook Pharmaceuticals Co.,Ltd | Observational | Hypertension (HTN); Hypertension; Essential (Primary) Hypertension | 4528 | | Takeda | Observational | Narcolepsy Type 1; Narcolepsy Type 2 | 402 | | Takeda | Observational | Narcolepsy Type 1 | 400 | | Helix Surgical | Observational | Cataract Surgery | 106 | | Agios Pharmaceuticals, Inc. | Included in the full CSV with every column 🔒 Unlock all 500 records → | | Medtronic - MITG | Included in the full CSV with every column 🔒 Unlock all 500 records → | | Bayer | Included in the full CSV with every column 🔒 Unlock all 500 records → | Browse 35 more matching record reports - [Agios Pharmaceuticals, Inc.](/report/clinicaltrialstartpulse/agios-pharmaceuticals-inc-us--nct-nct03481738-enrollment) - [Medtronic - MITG](/report/clinicaltrialstartpulse/medtronic-mitg-nonus--nct-nct07901049) - [Bayer](/report/clinicaltrialstartpulse/bayer-nonus--nct-nct06632483-completed) - [Pfizer](/report/clinicaltrialstartpulse/pfizer-nonus--nct-nct07897669) - [Boston Scientific Corporation](/report/clinicaltrialstartpulse/boston-scientific-corporation-nonus--nct-nct06762717-enrollment) - [Astellas Pharma Global Development, Inc.](/report/clinicaltrialstartpulse/astellas-pharma-global-development-inc-us--nct-nct06779773-enrollment) - [Pfizer](/report/clinicaltrialstartpulse/pfizer-us--nct-nct07251465-enrollment) - [Sanofi](/report/clinicaltrialstartpulse/sanofi-us--nct-nct07895381) - [AstraZeneca](/report/clinicaltrialstartpulse/astrazeneca-nonus--nct-nct06099236-enrollment) - [RECORDATI GROUP](/report/clinicaltrialstartpulse/recordati-group-nonus--nct-nct04253015-enrollment) - [AstraZeneca](/report/clinicaltrialstartpulse/astrazeneca-us--nct-nct07787117-completed) - [Nutromics](/report/clinicaltrialstartpulse/nutromics-us--nct-nct07893223) - [Boston Scientific Corporation](/report/clinicaltrialstartpulse/boston-scientific-corporation-us--nct-nct06431815-enrollment) - [AstraZeneca](/report/clinicaltrialstartpulse/astrazeneca-nonus--nct-nct07167433-enrollment) - [Boston Scientific Corporation](/report/clinicaltrialstartpulse/boston-scientific-corporation-nonus--nct-nct06656884-enrollment) - [Boston Scientific Corporation](/report/clinicaltrialstartpulse/boston-scientific-corporation-nonus--nct-nct06808217-enrollment) - [Medtronic Cardiac Ablation Solutions](/report/clinicaltrialstartpulse/medtronic-cardiac-ablation-solutions-us--nct-nct05005949-enrollment) - [Medtronic Cardiac Ablation Solutions](/report/clinicaltrialstartpulse/medtronic-cardiac-ablation-solutions-us--nct-nct05227053-completed) - [AMCG](/report/clinicaltrialstartpulse/amcg-nonus--nct-nct07888465) - [Hrain Biotechnology Co., Ltd.](/report/clinicaltrialstartpulse/hrain-biotechnology-co-ltd-nonus--nct-nct07888530) - [Janssen Korea, Ltd., Korea](/report/clinicaltrialstartpulse/janssen-korea-ltd-korea-nonus--nct-nct07890285) - [Apple Inc.](/report/clinicaltrialstartpulse/apple-inc-us--nct-nct04172766-terminated) - [Boston Scientific Corporation](/report/clinicaltrialstartpulse/boston-scientific-corporation-nonus--nct-nct06819865-recruiting) - [Sensorion](/report/clinicaltrialstartpulse/sensorion-us--nct-nct06354010-terminated) - [Encora, Inc.](/report/clinicaltrialstartpulse/encora-inc-us--nct-nct07911488) - [Pfizer](/report/clinicaltrialstartpulse/pfizer-nonus--nct-nct07909122) - [Nutrition 21, Inc.](/report/clinicaltrialstartpulse/nutrition-21-inc-us--nct-nct07909109) - [Ipsen](/report/clinicaltrialstartpulse/ipsen-nonus--nct-nct07906639) - [Sanofi](/report/clinicaltrialstartpulse/sanofi-nonus--nct-nct07906132) - [Bosch Quantum Sensing GmbH](/report/clinicaltrialstartpulse/bosch-quantum-sensing-gmbh-nonus--nct-nct07908173) - [Pfizer](/report/clinicaltrialstartpulse/pfizer-nonus--nct-nct07556549-completed) - [Sanofi](/report/clinicaltrialstartpulse/sanofi-nonus--nct-nct07905508) - [AstraZeneca](/report/clinicaltrialstartpulse/astrazeneca-nonus--nct-nct07905287) - [Schweitzer Engineering Laboratories](/report/clinicaltrialstartpulse/schweitzer-engineering-laboratories-us--nct-nct07903675) - [Sanofi](/report/clinicaltrialstartpulse/sanofi-nonus--nct-nct07905534) More records in this hub: [page 2](/hub/clinicaltrialstartpulse/phase/observational/page/2) · [page 3](/hub/clinicaltrialstartpulse/phase/observational/page/3) · [page 4](/hub/clinicaltrialstartpulse/phase/observational/page/4) [Browse all ClinicalTrialStartPulse record reports](/hub/clinicaltrialstartpulse/records) ## Which related categories and locations should I check? ### Browse by phase [Not applicable (device, behavioral) (4211)](/hub/clinicaltrialstartpulse/phase/na) [Phase 2 (1077)](/hub/clinicaltrialstartpulse/phase/phase2) [Phase 3 (559)](/hub/clinicaltrialstartpulse/phase/phase3) [Phase 1 (546)](/hub/clinicaltrialstartpulse/phase/phase1) [Phase 4 (320)](/hub/clinicaltrialstartpulse/phase/phase4) [Early phase 1 (89)](/hub/clinicaltrialstartpulse/phase/early-phase1) ### Browse by site location [Outside the US only (6377)](/hub/clinicaltrialstartpulse/sites/nonus) [United States sites (2424)](/hub/clinicaltrialstartpulse/sites/us) ### Browse by minimum enrollment [100+ (326)](/hub/clinicaltrialstartpulse/min_enrollment/100) [50+ (283)](/hub/clinicaltrialstartpulse/min_enrollment/50) [300+ (96)](/hub/clinicaltrialstartpulse/min_enrollment/300) [1,000+ (54)](/hub/clinicaltrialstartpulse/min_enrollment/1000) ## Frequently asked questions ### How many clinicalTrialStartPulse: Observational are listed? 1,999 records from ClinicalTrials.gov (U.S. National Library of Medicine) API v2 (the 500 newest are shown on this page), last refreshed automatically. The most recent is dated 2026-11-02. ### Can I get alerts for Observational? Yes. ClinicalTrialStartPulse can email you new records matching this filter; plans are listed on the ClinicalTrialStartPulse page. Source: ClinicalTrials.gov (U.S. National Library of Medicine) API v2. Informational only. [RSS feed of new records](/feed/clinicaltrialstartpulse.xml) ## Often used together - [NihBiotechGrantPulse](/v/nihbiotechgrantpulse) - [FDAPulse](/v/fdapulse) - [WaLobbyistEmploymentRegistrationsPulse](/v/walobbyistemploymentregistratpulse) - [SecurityIntegratorNdaaAudit](/securityintegratorndaaaudit) - [CoreWebVitalsPulse](/corewebvitalspulse) - [CookieConsentPulse](/cookieconsentpulse)