» Articles » PMID: 33344247

Highly Sensitive and Accurate Assessment of Minimal Residual Disease in Chronic Lymphocytic Leukemia Using the Novel CD160-ROR1 Assay

Overview
Journal Front Oncol
Specialty Oncology
Date 2020 Dec 21
PMID 33344247
Citations 2
Authors
Affiliations
Soon will be listed here.
Abstract

Undetectable minimal residual disease (MRD) in Chronic Lymphocytic Leukemia (CLL) has a favorable prognostic outcome compared with MRD that can be detected. This study investigated a flow cytometric assay (CD160-ROR1FCA) targeting the tumor-specific antigens CD160 and receptor tyrosine kinase-like orphan receptor 1 (ROR1), along with CD2, CD5, CD19, CD45. CD160-ROR1FCA was compared with the originally published 8-colour European Research Initiative for CLL (ERIC) gold-standard assay for CLL MRD detection. CD160-ROR1FCA had a limit of detection of 0.001% and showed strong correlation with ERIC ( = 0.98, p < 0.01) with negligible differences in MRD detection (bias -0.3152 95%CI 5.586 to -6.216). Using CD160-ROR1FCA, increased expression of both CD160 and ROR1 was found in Monoclonal B cell Lymphocytosis (MBL) compared to low-level polyclonal B-cell expansions (p < 0.01). Patients in CR and with undetectable MRD had a longer EFS (not reached) than those in CR but with detectable MRD (756 days, p < 0.01) versus 113 days in patients with partial remission (p < 0.01). Patients with MRD levels of >0.01 to 0.1% had a longer EFS (2,333 days), versus levels between 0.1 to 1% (1,049 days). CD160-ROR1FCA is a novel assay for routine CLL MRD measurement and for MBL detection. MRD status assessed by CD160-ROR1FCA after CLL treatment correlated with EFS.

Citing Articles

CD160 receptor in CLL: Current state and future avenues.

Oumeslakht L, Aziz A, Bensussan A, Ben Mkaddem S Front Immunol. 2022; 13:1028013.

PMID: 36420268 PMC: 9676924. DOI: 10.3389/fimmu.2022.1028013.


ROR1: an orphan becomes apparent.

Kipps T Blood. 2022; 140(14):1583-1591.

PMID: 35580162 PMC: 10653015. DOI: 10.1182/blood.2021014760.

References
1.
Seymour J, Kipps T, Eichhorst B, Hillmen P, DRozario J, Assouline S . Venetoclax-Rituximab in Relapsed or Refractory Chronic Lymphocytic Leukemia. N Engl J Med. 2018; 378(12):1107-1120. DOI: 10.1056/NEJMoa1713976. View

2.
Rawstron A, Villamor N, Ritgen M, Bottcher S, Ghia P, Zehnder J . International standardized approach for flow cytometric residual disease monitoring in chronic lymphocytic leukaemia. Leukemia. 2007; 21(5):956-64. DOI: 10.1038/sj.leu.2404584. View

3.
Farren T, Giustiniani J, Fanous M, Liu F, Macey M, Wright F . Minimal residual disease detection with tumor-specific CD160 correlates with event-free survival in chronic lymphocytic leukemia. Blood Cancer J. 2015; 5:e273. PMC: 4314455. DOI: 10.1038/bcj.2014.92. View

4.
Bottcher S, Ritgen M, Fischer K, Stilgenbauer S, Busch R, Fingerle-Rowson G . Minimal residual disease quantification is an independent predictor of progression-free and overall survival in chronic lymphocytic leukemia: a multivariate analysis from the randomized GCLLSG CLL8 trial. J Clin Oncol. 2012; 30(9):980-8. DOI: 10.1200/JCO.2011.36.9348. View

5.
Chabot S, Jabrane-Ferrat N, Bigot K, Tabiasco J, Provost A, Golzio M . A novel antiangiogenic and vascular normalization therapy targeted against human CD160 receptor. J Exp Med. 2011; 208(5):973-86. PMC: 3092350. DOI: 10.1084/jem.20100810. View