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Scientists watch and learn: no treatment, just tracking blood cancers over time

NCT ID NCT00923507

Knowledge-focused Sponsor: National Heart, Lung, and Blood Institute (NHLBI) Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 26, 2026 · Last updated Sep 16, 2026 · Updated 22 times

Summary

This study follows up to 1,000 adults with certain slow-growing blood cancers (CLL, SLL, LPL, WM) to track how the diseases change over time. Participants have regular check-ups and blood draws every 6 to 24 months, and may also have optional biopsies or scans for research. No treatment is given; if treatment becomes needed, other options are discussed.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

What this could lead to
If successful, this study could help identify new targets for future treatments by understanding how these blood cancers progress.
What could go wrong
This is an observational study, not a treatment trial, so it won't directly help participants. It may take many years to yield useful insights.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

About 1,000 people

The number the study aims to enrol. It can still change while the study runs.

Started

May 2008

Lead sponsor

A government research agency

The lead sponsor is the US National Institutes of Health.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

Patients with monoclonal B cell lymphocytosis (MBL), chronic lymphocytic leukemia/small lymphocytic lymphoma (CLL/SLL), lymphoplasmacytic lymphoma (LPL)/Waldenstr(SqrRoot)(Delta)m macroglobulinemia (WM), and splenic marginal zone lymphoma (SMZL).

Ages

18 to 110 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

-INCLUSION CRITERIA: 1. Diagnosis of CLL/SLL will be made according to the updated criteria of the NCI Working Group. * on treatment or previously treated * requiring or nearing first-line treatment OR Diagnosis of LPL/WM. LPL is defined as the presence of an intertrabecular pattern of bone marrow infiltration by small lymphocytes showing plasmacytoid/plasma cell differentiation. WM, comprising \>95% of LPL cases, describes the clinical syndrome of LPL associated with an IgM monoclonal gammopathy of any concentration. The remaining cases may be IgA, IgM, or non-secreting LPL. Immunophenotyping is required for diagnosis 2. Age greater than or equal to 18 years. 3. ECOG performance status of 0-2. 4. Able to comprehend the investigational nature of the protocol and provide informed consent EXCLUSION CRITERIA: 1\. None

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Conditions

The condition(s) this trial relates to.

B-cell chronic lymphocytic leukemia chronic lymphocytic leukemia/small lymphocytic lymphoma leukemia Leukemia, B-Cell lymphoma Lymphoma, B-Cell, Marginal Zone lymphoplasmacytic lymphoma persistent polyclonal B-cell lymphocytosis splenic marginal zone lymphoma Waldenstrom macroglobulinemia

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

CLL (chronic lymphocytic leukemia) Lymphoplasmacytic lymphoma Monoclonal B-cell lymphocytosis Small lymphocytic lymphoma Waldenstrom macroglobulinemia

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • National Institutes of Health Clinical Center

    RECRUITING

    Bethesda, Maryland, 20892, United States

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