ClinicalTrials.gg
CompletedNCT03250585Updated Sep 26, 2018

sPLA2 in EBC During Acute Chest Syndrome

An observational study in Sickle Cell Disease and Acute Chest Syndrome, sponsored by Virginia Commonwealth University. Completed at 1 site in United States. Open to participants aged 7 Years to 30 Years. Per ClinicalTrials.gov, last updated 2018-09-26.

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 listed conditions name Acute Chest Syndrome, a narrower term within Anemia, Sickle Cell.
Confidence
High: the new condition is named in the study's own listed conditions. Of 351 hand-checked studies reclassified this way, 68% were exactly right and 84% in the right disease family; the registry's first term was right for 5% (measured 2026-10-21). How we classify →
Wrong?
Tell us the study's main condition →

Sponsored by Virginia Commonwealth University · Observational

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Study type
Observational
Model
Case-only
Time perspective
Prospective
Enrollment
6
Ages
7 Years to 30 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-13

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
14th of 20
by date

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 14th 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: 7 Years to 30 Years · all sexes · no healthy volunteers.

The full table on the hub →

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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

Secretory phosholipases A2 (sPLA2) are significantly elevated in the plasma of sickle cell disease patients with acute chest syndrome (ACS), and similar enzymes have been measured in exhaled breath condensate (EBC), which is collected easily and non-invasively. The investigators hypothesize that sPLA2 will be measurable in EBC samples from sickle cell patients with acute chest syndrome.

Read the detailed description

The purpose of this research study is to test the ease and effectiveness of collecting exhaled breath condensate (liquid) to measure levels of a biomarker, secretory phospholipases A2 (sPLA2) in people with sickle cell disease during an attack of acute chest syndrome. sPLA2 levels have been reported to be much higher in persons with acute chest syndrome and might be useful to diagnose and to evaluate the effects of therapy.

Serial monitoring of plasma sPLA2 levels might lead to earlier or more accurate detection of acute chest syndrome and monitoring of its progression or improvement in patients with sickle cell disease. However, there is a significant inherent risk of frequent blood collection further dropping the blood (hemoglobin) levels of an already anemic patient. If sPLA2 can be measured in exhaled breath condensate, this non-invasive and well-tolerated sample collection might allow for serial monitoring of the enzyme without depleting the patient's already diminished blood supply.

03

Conditions studied

  • Sickle Cell Disease
  • Acute Chest Syndrome

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Keywords

  • acute chest syndrome
  • secretory phospholipases A2
  • exhaled breath condensate
  • sickle cell disease
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 6 is below the median of 133 across 10 observational studies indexed under Acute Chest Syndrome.

Browse Acute Chest Syndrome studies →

Lead sponsor

Virginia Commonwealth University is the lead sponsor of 648 studies on the registry; 80 are open to participants now.

Of its 90 completed or terminated interventional studies of FDA-regulated products, 64 (71%) 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
7 Years to 30 Years
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Sickle cell patients with acute chest syndrome

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Diagnosis of sickle cell anemia (the most severe types of sickle cell disease) as demonstrated by one of the following genotypes: HbSS, HbSβ0
  2. Age ≥ 7 and \< 40 years
  3. Diagnosis of ACS as defined below
  4. EBC collection able to be initiated within 48 hours of diagnosis of ACS

Definition of acute chest syndrome to be used: New radiographic pulmonary infiltrate of at least one complete lung segment in addition to 2 or more of the following symptoms: fever, chest pain, dyspnea, tachypnea, hypoxia. Given the small number of subjects in this feasibility study, we are using the more conservative definition in order to ensure samples are from patients with true ACS. This will increase the likelihood that sPLA2 levels will be high enough for measurement.

Exclusion criteria

Exclusion Criteria:

  1. Blood product transfusion in the previous 3 months (due to potential alterations in biomarkers, including sPLA2)
  2. Chronic inflammatory conditions other than sickle cell (due to elevation from baseline of sPLA2 in inflammatory conditions)
  3. Physical inability to correctly breathe into the mouthpiece for the required amount of time without compromising respiratory status
  4. Intubated patients (though EBC can be measured in intubated patients, we will not include this subpopulation for the purpose of this study)
  5. Pregnancy (due to the hematologic and respiratory changes that physiologically occur during gestation)
06

Study design

Observational model
Case-only
Time perspective
Prospective
Enrollment
6 participants (actual)
Patient registry
No

Groups and cohorts

  • Sickle Cell Patients with Acute Chest Syndrome

    Sickle cell patients with active acute chest syndrome (ACS) from which samples of EBC and plasma will be collected during acute illness within 48 hours of admission with or diagnosis of ACS (Time point 1) in 3 sessions each 1 hour apart (Time point 1a, 1b, and 1c), and 2 weeks after discharge when have returned to steady-state (Time point 2). Time point 2 samples will serve as control (baseline) samples.

    Diagnostic Test: Exhaled Breath Condensate (EBC) · Diagnostic Test: Plasma Sample

Interventions

  • Diagnostic testExhaled Breath Condensate (EBC)

    Serial EBC samples will be collected within 48 hours of acute chest syndrome (ACS) diagnosis and at 2 week follow up

  • Diagnostic testPlasma Sample

    Serial plasma samples will be collected within 48 hours of acute chest syndrome (ACS) diagnosis and at 2 week follow up

07

What researchers measure

Primary outcomes

  1. sPLA2 Measurement in EBC during ACS

    sPLA2 level in EBC at Time point 1 (during acute ACS episode) as measured by ELISA

    Time frame: Time point 1 (within either 48 hours of admission or time of diagnosis of ACS, if not present on admission)

  2. sPLA2 Levels in EBC during ACS versus Steady-State

    Comparison of sPLA2 levels in EBC from Time point 1 (during acute illness) and Time Point 2 (return to baseline status at 2 week follow up).

    Time frame: Time point 1 to Time point 2 (at 2 week follow-up)

Secondary outcomes

  1. sPLA2 levels in EBC versus Plasma

    Difference in sPLA2 levels from EBC compared with Plasma during Time point 1 (during acute illness)

    Time frame: Time point 1 (within either 48 hours of admission or time of diagnosis of ACS, if not present on admission)]

08

Study locations

1 site
  • Virginia Commonwealth University
    Richmond, Virginia 23298, United States
09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Jan 2018 to primary completion in Jun 2018, 4 months.

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

Registered
Aug 10, 2017
First posted
Aug 15, 2017
StartActual
Jan 19, 2018
Primary completionActual
Jun 14, 2018
CompletionActual
Jun 14, 2018
Last update
Sep 26, 2018
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 Sep 26, 2018, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03250585
Responsible party
Sponsor
First posted
Aug 15, 2017
Start date
Jan 19, 2018
Primary completion
Jun 14, 2018
Completion
Jun 14, 2018
Last update
Sep 26, 2018

Study contacts

Davis D Michael, PhD
principal investigator · Virginia Commonwealth University

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 Sep 2018. You cannot join it, but the record below documents what was studied.

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