Epidemiologic Study of Persistent Polyclonal B-cell Lymphocytosis (PPBL)

Epidemiologic Study of Persistent Polyclonal B-cell Lymphocytosis (PPBL) - Observatory 1990-2012

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT03296046

Acronym

LPLB

Enrollment

100

Registered

2017-09-28

Start date

2012-11-13

Completion date

2015-12-31

Last updated

2017-09-28

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Persistent Polyclonal B-Cell Lymphocytosis

Brief summary

The main purpose of this study is the description of all French cases of PPBL and the establishment of minimal criteria for the pathology diagnosis and its follow-up. The secondary objective is the immunologic and genetic characterization of lymphoid cells causing the disease.

Interventions

BIOLOGICALBlood test

30 ml

Study design

Observational model

COHORT

Time perspective

CROSS_SECTIONAL

Eligibility

Sex/Gender

ALL

Age

18 Years to No maximum

Healthy volunteers

Inclusion criteria

* PPBL diagnosis established during a previous medical visit

Exclusion criteria

* None

Design outcomes

Primary

Measure	Time frame
Relevant medical history	Baseline
Complete blood count	Baseline
Administration of first-line treatment or not	Baseline

Secondary

Measure	Time frame
Lymphocyte phenotype	Baseline

Countries

France

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026