Assesment of JL1 Expression in Acute Leukemia

September 17, 2020 updated by: Zeinab Galal Eldeen Abdelhamid, Assiut University

Assesment of JL1 Expression in B-cell Acute Lymphoblastic Leukemia

The aim of this study is to assess JL1 expression by flow cytometric immunophenotyping in patients with B-cell Acute Lymphoblastic Leukemia (ALL) and to correlate it with clinical, morphological, immunophenotypic, cytogenetic data and response to treatment.

Study Overview

Status

Not yet recruiting

Conditions

Intervention / Treatment

Detailed Description

Acute Lymphoblastic Leukemia (ALL) is characterized by a rapidly progressive disease. It accounts for approximately 75% of all cases of childhood leukemias, that produces large and immature cells (20% or more lymphoblasts in the bone marrow (BM) and/or the blood) that can't carry out their normal BM function (Terwilliger and Abdul-Hay, 2017).

The main cause of ALL lies in the genetic or acquired injury to DNA of a single cell in the BM with the presence of risk factors such as radiation, benzene exposure, Down syndrome and past treatment with chemotherapeutic agents which leads to uncontrolled and exaggerated growth and accumulation of lymphoblasts which fail to function as normal blood cells. This results in blocking the production of normal blood cells and leads to anemia, thrombocytopenia and neutropenia. The most frequent signs are lymphadenopathies, hepatosplenomegaly, fever, anemia, signs of hemorrhage, and bone tenderness.

The prognostic factors of ALL include patients' factors such as age, white blood cell (WBC) count and genetic factors such as chromosome and gene changes along with the immunophenotypic characteristics of the leukemic blast cells and the individual response to therapy.

JL1 is a CD43 epitope and mucin family cell surface glycoprotein that is expressed on leukemic cells. It is expressed on hematopoietic cells at different stages of differentiation including early stage lymphoid precursors and late stage of myeloid cells. Expression patterns of JL1 antigen occurs on cell surface of leukemic cells, BM cells and phytohemagglutinin (PHA)-activated lymphocytes. Most leukemic cells usually express JL1 even in weak positive cases.

JL1 is usually expressed in about 60% of acute leukemia regardless of the lineage. It was also detected on CD34+ CD10+ lymphoid precursors and some immature myeloid cells in BM. An anti-JL1 (a monoclonal antibody that is selectively reactive with antigen in spite of the differences in the molecular weight) is mixed with a toxic substance that target the leukemic cells which leads to the emergence of its role as a therapeutic agent.

Therefore, the invistigators aim to study JL1 expression on leukemic cells in ALL patients in South Egypt Cancer Institute, as we hypothesis that it can be used as an adjunctive marker for the initial diagnosis and the follow up of ALL.

Study Type

Interventional

Enrollment (Anticipated)

50

Phase

  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  1. Patients with newly diagnosed B-cell ALL.
  2. Age group: both pediatric patients (< 18 years old) and adult patients (> 18 years old) will be included in our study.

Exclusion Criteria:

1. Patients with other types of hematologic neoplasms. 2 .Relapsed patients.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Diagnostic
  • Allocation: Non-Randomized
  • Interventional Model: Sequential Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: JL1
JL1 on acute leukemia
Biological: JL1 antigen
we hypothesis that JL1 can be used as an adjunctive marker for the initial diagnosis and the follow up of Acute Lymphoblastic Leukemia.
Experimental: JL1 and acute leukemia
Assesment of JL1 expression on acute leukemia
Biological: JL1 antigen
we hypothesis that JL1 can be used as an adjunctive marker for the initial diagnosis and the follow up of Acute Lymphoblastic Leukemia.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Evaluation and assessment of JL1 expression in B-cell Acute Lymphoblastic Leukemia.
Time Frame: Baseline
Correlatin of this marker with clinical, morphological, immunophenotypic, cytogenetic data and response to treatment.
Baseline

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Assiut University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Anticipated)

October 13, 2020

Primary Completion (Anticipated)

October 1, 2023

Study Completion (Anticipated)

November 1, 2023

Study Registration Dates

First Submitted

September 14, 2020

First Submitted That Met QC Criteria

September 17, 2020

First Posted (Actual)

September 18, 2020

Study Record Updates

Last Update Posted (Actual)

September 18, 2020

Last Update Submitted That Met QC Criteria

September 17, 2020

Last Verified

September 1, 2020

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • JL1 in Acute Leukemia

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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