Genomic and proteomic characterization of Philadelphia-like B-lineage acute lymphoblastic leukemia: A report of Indian patients.
Cancer
; 129(8): 1217-1226, 2023 04 15.
Article
em En
| MEDLINE
| ID: mdl-36738086
ABSTRACT
BACKGROUND:
The gold standard for the identification of Philadelphia (Ph)-like acute lymphoblastic leukemia (ALL) patients is gene expression profiling. Because of its diverse nature, its identification is extremely difficult and expensive. On the genomic and proteomic landscape of Ph-like ALL patients, there is a paucity of published literature from developing countries.METHODS:
The authors used digital barcoded nCounter NanoString gene expression profiling for its detection, followed by molecular and proteomic characterization using fluorescence in situ hybridization and liquid chromatography-tandem mass spectrometry (LC-MS/MS).RESULTS:
The authors found 32.05% Ph-like ALL patients and their median age at presentation was considerably higher than Ph-negative ALL cases (p = .0306). Furthermore, we identified 20% CRLF2 overexpressed cases having 8.33% CRLF2-IGH translocation with concomitant R683S mutation and 8.33% CRLF2-P2RY8 translocation. In 80% of CRLF2 downregulated cases, we identified 10% as having JAK2 rearrangement. Minimal residual disease-positivity was more common in Ph-like ALL cases (55.55% vs. 25% in Ph-negative ALL cases). Immunoglobulin J chain (Jchain), small nuclear ribonucleoprotein SmD1 (SNRPD1), immunoglobulin κ constant (IGKC), NADH dehydrogenase (ubiquinone) 1 α subcomplex subunit 2 (NDUFA2), histone H2AX (H2AFX), charged multivesicular body protein 4b (CHMP4B), and carbonyl reductase (NADPH) (CBR1) proteins were identified to be substantially expressed in Ph-like ALL patients, using LC-MS/MS. Gene enrichment analysis indicated that involvement of spliceosomal mediated messenger RNA splicing pathway and four microRNAs was statistically significant in Ph-like ALL patients.CONCLUSIONS:
For the first time, we have described incidence, molecular, and proteomic characterization of Ph-like ALL, in developing nations. PLAIN LANGUAGESUMMARY:
In developing countries, detecting Philadelphia (Ph)-like B-lineage acute lymphoblastic leukemia is complicated and challenging due to its diverse genetic landscape. There is no well-defined and cost-effective methodology for its detection. The incidence of this high-risk subtype is very high in adult cases, and there is an urgent need for its accurate detection. We have developed an online PHi-RACE classifier for its rapid detection, followed by delineating the genomic and proteomic landscape of Ph-like acute lymphoblastic leukemias for the first time in Indian patients.Palavras-chave
B-acute lymphoblastic leukemia (B-ALL), chimeric gene fusion (CGF); fluorescence in situ hybridization (FISH); gene expression profiling (GEP); leukemia-associated immunophenotyping (LAIP); liquid chromatography-tandem mass spectrometry (LC-MS/MS); multiplex reverse transcriptase-polymerase chain reaction (RT-PCR)
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Leucemia-Linfoma Linfoblástico de Células Precursoras B
/
Leucemia-Linfoma Linfoblástico de Células Precursoras
Limite:
Adult
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Humans
Idioma:
En
Ano de publicação:
2023
Tipo de documento:
Article