ClinicalTrials.gg
CompletedNCT03478917Updated Jul 17, 2023

Early Diagnosis of Sickle Acute Chest Syndrome Using a Combination of Plasma Bimarkers and Chest Imaging

An observational study in Sickle Cell Disease (SCD), sponsored by National Heart, Lung, and Blood Institute (NHLBI). Completed at 1 site in United States. Open to participants aged 10 Years to 85 Years. Per ClinicalTrials.gov, last updated 2023-07-17.

Primary conditionAcute Chest SyndromeRegistry: Anemia, Sickle CellReclassifiedWhy we changed it
Registry
Anemia, Sickle Cell — the first condition term the registry derived for this study.
ClinicalTrials.gg
Acute Chest Syndrome
Why
  1. The study's title name Acute Chest Syndrome, a narrower term within Anemia, Sickle Cell.
Confidence
High: the new condition is named in the study's own title. Of 46 hand-checked studies reclassified this way, 72% were exactly right and 89% in the right disease family; the registry's first term was right for 4% (measured 2026-10-21). How we classify →
Wrong?
Tell us the study's main condition →

Sponsored by National Heart, Lung, and Blood Institute (NHLBI) · Observational

Study type
Observational
Model
Cohort
Time perspective
Retrospective
Enrollment
65
Ages
10 Years to 85 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 20 studies in Acute Chest Syndrome with a site in United States — 3 open to participants now, 3 under way, none of them phase 3. Acute Chest Syndrome · United States.

Started
2018
with 2 others
Observational
3 of 20
1 open now
Registered
15th of 20
by date
Lead sponsor
3 of 20
National Heart, Lung, and Blood Institute (NHLBI)

Among the 20 studies in Acute Chest Syndrome with a site in United States, this one is one of 3 that started in 2018, is one of 3 observational ones, and was the 15th registered.

Acute Chest Syndrome

40 studies on the registry are indexed under Acute Chest Syndrome; 11 are open to participants now.

Browse Acute Chest Syndrome studies →

Open to participants now

3 of the 20 studies in Acute Chest Syndrome with a site in United States are open now. Recruiting first, the newest first:

All 3 open studies →

A study can be open while its sites in United States have not opened yet or have stopped. Only those recruiting at a site in United States →

Who these studies take

Of the 7 Acute Chest Syndrome studies recruiting now, 5 set no upper age limit and 1 stops at 75 or younger; 5 take children under 18; none take healthy volunteers.

This study: 10 Years to 85 Years · all sexes · no healthy volunteers.

The full table on the hub →

This tab as a report to print or save as PDF → With an account.

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Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 20 studies in Acute Chest Syndrome with a site in United States, or all of them as a file.
02

Study summary

Background:

Painful vasoocclusive crisis (VOC) occurs in people with sickle cell disease (SCD). People with VOC have many visits to the hospital. About 10 30 percent of these people will go on to develop acute chest syndrome (ACS). ACS can cause further ill health. It can also cause death. Researchers want to find ways to diagnose ACS more quickly. To do this, they want to use stored blood samples and scans from a study (the DeNOVO trial) that was closed in 2015. They want to see if scans and samples taken of people with VOC who later developed ACS could help diagnose ACS faster. The data of people in the DeNOVO study who did not develop ACS will serve as controls.

Objectives:

To look at data from the DeNOVO trial to find a way to diagnose ACS more quickly.

Eligibility:

People 10 85 years old who took part in NHLBI Protocol number 05-H-0019 (the DeNOVO trial). The trial lasted from 2004 to 2008. The study was closed in November 2015.

Design:

Scans and intact, frozen samples from a study that was closed in 2015 will be studied. No new participants will be enrolled.

...

Read the detailed description

Painful vasoocclusive crisis (VOC) is the most frequent acute clinical manifestation of sickle cell disease (SCD), frequently necessitating emergency department visits and/or hospitalization. Approximately 10-30% of patients admitted to the hospital with a VOC will go on to develop acute chest syndrome (ACS), a complication of SCD resulting in significant morbidity and mortality. While ACS related mortality appears to be improving in the United States, the number of hospital admissions for ACS is on the rise. Unfortunately, the diagnosis of ACS is often delayed with up to 50% of cases diagnosed two to three days after an admission for VOC. The clinical diagnosis of ACS is often delayed as it mimics other respiratory diseases. Furthermore, the lack of definitive laboratory and radiological biomarkers further confounds the ability to detect rapidly progressive ACS, a phenotype accounting for considerable ACS-related mortality. Currently, a key criterion for the diagnosis of ACS is the presence of new airspace disease on a chest radiograph in a sickle cell patient with respiratory symptoms. However, the appearance of abnormalities on chest radiography (CXR) often lags behind clinical signs and diagnostic techniques such as computed tomography (CT) which tends to reveal radiologic changes much earlier than CXR. Early diagnosis and treatment of ACS improves outcomes, hence the scientific rationale to perform such studies and develop diagnostic algorithms to facilitate early detection of ACS.

In the current study proposal, we will utilize stored blood samples and review CT scans and CXRs from 65 participants of the DeNOVO trial (NHLBI protocol # 05-H-0019). This multicenter trial conducted between 2004-08 at 11 centers including the NIH, showed that among patients with SCD hospitalized with VOC, the use of inhaled nitric oxide compared with placebo did not improve time to crisis resolution. In this study, patients enrolled at the NIH study site had baseline admission research blood drawn and thoracic CT scans performed. A repeat CT scan and repeat blood work was subsequently obtained during the development of ACS. The archived data from this subset of the study cohort therefore provides an opportunity to rigorously test the hypothesis that CT scans performed early in the setting of VOC in patients going on to develop ACS would have utility in the rapid diagnosis of this condition. Furthermore, the availability of stored plasma samples from this cohort permits the study of both imaging and plasma biomarkers in a prospectively defined sample of SCD patients. Specifically, we will identify patients admitted with VOC that went on to develop ACS and study their CT scans and plasma to determine whether these biomarkers will rapidly diagnose ACS. The patients in the same study who did not develop ACS will serve as controls.

03

Conditions studied

  • Sickle Cell Disease (SCD)

Browse trials for

Keywords

  • Vasoocclusive Crisis (VOC)
  • Sickle Cell Disease (SCD)
  • Acute Chest Syndrome (ACS)
  • Pulmonary Syndrome
  • Pneumonia
  • Natural History
04

In context

Acute Chest Syndrome Reclassified

40 studies on the registry are indexed under Acute Chest Syndrome; 11 are open to participants now.

This study's enrollment of 65 is below the median of 133 across 10 observational studies indexed under Acute Chest Syndrome.

Browse Acute Chest Syndrome studies →

Lead sponsor

National Heart, Lung, and Blood Institute (NHLBI) is the lead sponsor of 1,144 studies on the registry; 72 are open to participants now.

Of its 58 completed or terminated interventional studies of FDA-regulated products, 51 (88%) have results posted.

Compared within Acute Chest Syndrome, this study's primary condition as ClinicalTrials.gg classifies it; the registry's first condition term is Anemia, Sickle Cell. The counts are of registry records indexed under each term, refreshed daily. How we classify →

05

Who can participate

Ages eligible
10 Years to 85 Years
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

65 participants of the DeNOVO study enrolled at the NIH

Eligibility criteria

  • Patients (aged 10 years and older) presenting with vaso-occlusive crisis requiring admission that were enrolled in the DeNOVO study specifically at the NIH clinical center (n=65).We will use stored blood

samples and review radiological images from these patients.

06

Study design

Observational model
Cohort
Time perspective
Retrospective
Enrollment
65 participants (actual)

Groups and cohorts

  • Arm 1

    Subjects previously enrolled onto protocol 05-H-0019 who were hospitalized with vasoocclusivecrisis.

07

What researchers measure

Primary outcomes

  1. Radiological, clinical diagnosis of Acute Chest Syndrome

    CT scans can help in the early diagnosis of acute chest syndrome.

    Time frame: 15 days from admission

Secondary outcomes

  1. Hematological clinical diagnosis of acute chest syndrome

    sPLA2 biomarker can predict acute chest syndrome

    Time frame: 15 days from admission

08

Study locations

1 site
  • National Heart, Lung and Blood Institute (NHLBI)
    Bethesda, Maryland 20892, United States
09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Feb 2018 to primary completion in Dec 2019, 22 months.

How these figures are worked out, and which studies are left out of them.

Registered
Mar 23, 2018
First posted
Mar 27, 2018
StartActual
Feb 27, 2018
Primary completionActual
Dec 31, 2019
CompletionActual
Oct 27, 2021
Last update
Jul 17, 2023
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jul 17, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03478917
Responsible party
Sponsor
First posted
Mar 27, 2018
Start date
Feb 27, 2018
Primary completion
Dec 31, 2019
Completion
Oct 27, 2021
Last update
Jul 17, 2023

Study contacts

Arun S Shet, M.D.
principal investigator · National Heart, Lung, and Blood Institute (NHLBI)

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jul 2023. You cannot join it, but the record below documents what was studied.

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