Alexza Pharmaceuticals

Closed portfolio with an early-phase archive tilt

According to ClinicalTrials.gov-derived indexes, Alexza Pharmaceuticals sits in the top decile of US sponsors by registered trial count (#696 of 15,742 sponsors by registered trial count).

22 total trials none currently recruiting 21 completed early-phase tilt top decile by trial count

Alexza Pharmaceuticals: 22 sponsored US clinical trials, none currently recruiting.

Alexza Pharmaceuticals sponsors 22 registered US clinical trials on ClinicalTrials.gov, none currently recruiting, and 21 completed. 3 of these trials are in Phase 3-4 (later-stage) and 19 in Phase 1-2 (earlier-stage). The most-studied condition in this pipeline is Thorough QT/QTc Study, with 1 trials.

Top-decile sponsor footprint

Alexza Pharmaceuticals ranks in the top decile of sponsors by registered trial count (#696 of 15,742 sponsors by registered trial count). Volume at this scale usually reflects a long institutional pipeline, read phase tilt and therapeutic areas below before treating it as current-year activity.

Trial completion reliability score

C 78/100

21 of 22 decided trials (Completed vs. Terminated on ClinicalTrials.gov) reached their planned completion (95.5%), vs. national p10 68.4% / p90 100% among 1,234 sponsors with at least 10 decided trials. Still-open trials (Recruiting, Active-not-recruiting, Not-yet-recruiting) are excluded since they have not reached an outcome yet.

Indexed trials (enrollment closed)

22 total, page 1 of 1

TERMINATED Phase 2

Study to Evaluate the Efficacy and Safety of Staccato Apomorphine (AZ-009) in Patients With Parkinson's Disease Experiencing OFF Episodes

NCT05979415

COMPLETED Phase 2

Staccato Granisetron® (AZ 010) for the Treatment of Cyclic Vomiting Syndrome

NCT04645953

COMPLETED Phase 1

Staccato® Granisetron Multiple Dose PK

NCT04327765

COMPLETED Phase 4

ADASUVE-Lorazepam Drug-Drug Interaction

NCT01877642

COMPLETED Phase 1

Staccato Loxapine Pulmonary Safety in Patients With COPD

NCT00889837

COMPLETED Phase 1

Staccato Loxapine Pulmonary Safety in Patients With Asthma

NCT00890175

COMPLETED Phase 1

Staccato Loxapine Thorough QT/QTc Study

NCT00874237

COMPLETED Phase 1

Staccato Loxapine PK in Smokers and Nonsmokers

NCT00873769

COMPLETED Phase 2

Staccato Loxapine in Migraine (Out Patient)

NCT00825500

COMPLETED Phase 1

Staccato Loxapine Pulmonary Safety in Healthy Volunteers

NCT00789360

COMPLETED Phase 3

Staccato Loxapine in Agitated Patients With Bipolar Disorder

NCT00721955

COMPLETED Phase 3

Staccato Loxapine in Agitated Patients With Schizophrenia

NCT00628589

COMPLETED Phase 1

Staccato Zaleplon Single Dose Pharmacokinetics

NCT00620620

COMPLETED Phase 1

Staccato Loxapine Multidose PK

NCT00555412

COMPLETED Phase 1

Staccato Prochlorperazine Thorough QT/QTc

NCT00543062

COMPLETED Phase 2

Staccato Loxapine in Migraine (in Clinic)

NCT00489476

COMPLETED Phase 2

Staccato Alprazolam in Panic Attack

NCT00477451

COMPLETED Phase 2

Staccato Loxapine in Agitation (Proof of Concept)

NCT00369577

COMPLETED Phase 2

Staccato Prochlorperazine in Migraine (Out Patient)

NCT00422812

COMPLETED Phase 1

Staccato Fentanyl Single and Multidose PK

NCT00402350

COMPLETED Phase 1

Staccato Loxapine Single Dose PK

NCT00444028

COMPLETED Phase 2

Staccato Prochlorperazine in Migraine (in Clinic)

NCT00610428

Phase Distribution

PhaseTrial count
Phase 1 11
Phase 2 8
Phase 3 2
Phase 4 1

Therapeutic Areas

How the Alexza Pharmaceuticals early-phase archive is shaped

22 indexed studies, none listed as recruiting (0% open); 21 completed (95%).

Phase mix: 3 late (III/IV) vs 19 early (I/II) (early-phase heavy).

Top condition: Thorough QT/QTc Study (1 trial), 1 other listed.

How to read a closed sponsor archive

When recruiting_count is zero, the indexed set is completed or otherwise not open. Phase tilt still describes where archived studies sat on the investigational pathway. Re-check ClinicalTrials.gov before acting.

Alexza Pharmaceuticals: archived-pipeline peers nationwide

Peers matched on 22 indexed studies with no current recruiting: volume and archive shape, not condition overlap.

Alexza Pharmaceuticals sits at or above the median trial volume and at or above the median recruiting share among these 9 nationwide peers -- the two do not always move together. Source: ClinicalTrials.gov (2026-08-08 snapshot). 2×2 strategic matrix plotting 9 entities by Total trials (X) and Recruiting share (Y), with a crosshair dividing the plot into four quadrants. Higher volume & more openFocused & more openHigher volume, mostly closedSmaller & mostly closed 0510152025 0%5%10%15% Total trials Recruiting share Alexza PharmaceuticalsAlaunos TherapeuticsCalithera BiosciencesFate TherapeuticsGriffin Hospital10xBio22nd Century Group23andMe3-C Institute for Social Development
Alexza Pharmaceuticals sits at or above the median trial volume and at or above the median recruiting share among these 9 nationwide peers -- the two do not always move together. Source: ClinicalTrials.gov (2026-08-08 snapshot).

Alexza Pharmaceuticals sits at or above the median trial volume and at or above the median recruiting share among these 9 nationwide peers -- the two do not always move together.

Sponsors near 22 archived trials

Sponsors with similar archive density (± trial count)

What to do with this Alexza Pharmaceuticals page

22 registered trials is a research-attention snapshot, not an endorsement of Alexza Pharmaceuticals or any single study.

  • None of Alexza Pharmaceuticals's trials are currently recruiting in this registry; that can change as new trials post, or check the broader research index. Browse research indexes
  • Thorough QT/QTc Study is the condition Alexza Pharmaceuticals studies most, compare against other sponsors active in the same condition before evaluating a specific study. See Thorough QT/QTc Study trials
  • Bring the specific trial ID (NCT number) to your own doctor before enrolling, this page is a directory, not medical guidance. Read the trial-finding guide

Trial and recruiting counts reflect ClinicalTrials.gov registry status as of the data vintage above; individual trial eligibility and enrollment status can change.

Alexza Pharmaceuticals pipeline card: 22 registered trials from official public datasets.Report a data error.