Volume 43, Issue 5 pp. 990-999
ORIGINAL ARTICLE

Expression of CD304/neuropilin-1 in adult b-cell lymphoblastic leukemia/lymphoma and its utility for the measurable residual disease assessment

Gaurav Chatterjee

Gaurav Chatterjee

Department of Hematopathology Laboratory, ACTREC, Tata Memorial Center, HBNI University, Navi Mumbai, India

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Vishesh Dudakia

Vishesh Dudakia

Department of Hematopathology Laboratory, ACTREC, Tata Memorial Center, HBNI University, Navi Mumbai, India

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Sitaram Ghogale

Sitaram Ghogale

Department of Hematopathology Laboratory, ACTREC, Tata Memorial Center, HBNI University, Navi Mumbai, India

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Nilesh Deshpande

Nilesh Deshpande

Department of Hematopathology Laboratory, ACTREC, Tata Memorial Center, HBNI University, Navi Mumbai, India

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Karishma Girase

Karishma Girase

Department of Hematopathology Laboratory, ACTREC, Tata Memorial Center, HBNI University, Navi Mumbai, India

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Anumeha Chaturvedi

Anumeha Chaturvedi

Department of Hematopathology Laboratory, ACTREC, Tata Memorial Center, HBNI University, Navi Mumbai, India

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Dhanlaxmi Shetty

Dhanlaxmi Shetty

Department of Department of Cancer Cytogenetics, ACTREC, Tata Memorial Center, HBNI University, Navi Mumbai, India

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Manju Senger

Manju Senger

Department of Medical Oncology, Tata Memorial Center, HBNI University, Mumbai, India

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Hasmukh Jain

Hasmukh Jain

Department of Medical Oncology, Tata Memorial Center, HBNI University, Mumbai, India

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Bhausaheb Bagal

Bhausaheb Bagal

Department of Medical Oncology, Tata Memorial Center, HBNI University, Mumbai, India

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Avinash Bonda

Avinash Bonda

Department of Medical Oncology, Tata Memorial Center, HBNI University, Mumbai, India

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Sachin Punatar

Sachin Punatar

Department of Medical Oncology, Tata Memorial Center, HBNI University, Mumbai, India

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Anant Gokarn

Anant Gokarn

Department of Medical Oncology, Tata Memorial Center, HBNI University, Mumbai, India

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Navin Khattry

Navin Khattry

Department of Medical Oncology, Tata Memorial Center, HBNI University, Mumbai, India

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Nikhil V. Patkar

Nikhil V. Patkar

Department of Hematopathology Laboratory, ACTREC, Tata Memorial Center, HBNI University, Navi Mumbai, India

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Sumeet Gujral

Sumeet Gujral

Department of Pathology, Tata Memorial Center, HBNI University, Mumbai, India

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Papagudi G. Subramanian

Papagudi G. Subramanian

Department of Hematopathology Laboratory, ACTREC, Tata Memorial Center, HBNI University, Navi Mumbai, India

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Prashant R. Tembhare

Corresponding Author

Prashant R. Tembhare

Department of Hematopathology Laboratory, ACTREC, Tata Memorial Center, HBNI University, Navi Mumbai, India

Correspondence

Prashant R. Tembhare, Department of Hematopathology Laboratory, ACTREC, Tata Memorial Center, HBNI University, Room 18, Hematopathology Laboratory, CCE Building, ACTREC, Sector 22, Navi Mumbai 410210, India.

Email: [email protected]

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First published: 12 January 2021
Citations: 4

Abstract

Introduction

Many new markers are being evaluated to increase the sensitivity and applicability of multicolor flow cytometry (MFC)-based measurable residual disease (MRD) monitoring. However, most of the studies are limited to childhood B-cell lymphoblastic leukemia/lymphoma (B-ALL), and reports in adult B-ALL are extremely scarce and limited to small cohorts. We studied the expression of CD304/neuropilin-1 in a large cohort of adult B-ALL patients and evaluated its practical utility in MFC-based MRD analysis.

Methods

CD304 was studied in blasts from adult B-ALL patients and normal precursor B cells (NPBC) from non-B-ALL bone marrow samples using MFC. CD304 expression intensity and pattern were studied with normalized-mean fluorescent intensity (nMFI) and coefficient of variation of immunofluorescence (CVIF), respectively. MFC-based MRD was performed at end of induction (EOI; day-35), end of consolidation (EOC; day 78-80), and subsequent follow-up (SFU) time points.

Results

CD304 was positive in 120/214(56.07%) and was significantly associated with BCR-ABL1 fusion (P = .001). EOI-MRD and EOC-MRD were positive in 129/214(60.3%) and 50/81(61.72%), respectively. CD304 was positive in a significant percentage of EOI (48%, 62/129) and EOC (52%, 26/50) MRD-positive B-ALL samples. Its expression was retained, lost, and gained in 73.7%, 26.3%, and 11.3% of EOI-MRD and 85.7%, 14.3%, and none of EOC-MRD samples, respectively. Low-level MRD (<0.01%) was detectable in 34 of all (EOI + EOC + SFU = 189) MRD-positive samples, and CD304 was found useful in 50% of these samples.

Conclusion

CD304 is commonly expressed in adult B-ALL and clearly distinguish B-ALL blasts from normal precursor B cells. It is a stable MRD marker and distinctly useful in the detection of MFC-based MRD monitoring, especially in high-sensitivity MRD assay.

CONFLICT OF INTEREST

The authors have no competing interests.

DISCLOSURE

Co-author Nikhil V Patkar is supported by the Wellcome Trust-DBT/India Alliance through an Intermediate Fellowship for Clinicians and Public Health Researchers.

DATA AVAILABILITY STATEMENT

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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