Dataset Information

Prognostic impact of interim positron emission tomography in mantle cell lymphoma patients treated with frontline R-CHOP.

ABSTRACT: Although ¹⁸ F-fluorodeoxyglucose positron emission tomography (¹⁸ F-FDG PET) is commonly used for initial staging and therapeutic response evaluation in aggressive lymphomas, its prognostic utility for mantle cell lymphoma (MCL) is controversial. Therefore, we retrospectively evaluated the correlations of interim PET (iPET) and end-of-treatment PET (ePET) response with survival outcomes in 89 consecutive advanced MCL patients treated with frontline R-CHOP (rituximab, cyclophosphamide, doxorubicin, vincristine and prednisolone). iPET positivity was strongly associated with inferior five-year overall survival (OS) [hazard ratio (HR) 7·84, P < 0·0001] and poor five-year progression-free survival (PFS) (HR 3·34, P < 0·0001). OS and PFS were more favourable in the order early metabolic responder (iPET^neg ? ePET^neg ), delayed responder (iPET^pos ? ePET^neg ), loss-metabolic responder (iPET^neg ? ePET^pos ), and never-metabolic responder (iPET^pos ? ePET^pos ). In the autologous haematopoietic stem cell transplantation (auto-HSCT)-fit subgroup, OS was more favourable in the order early metabolic responders, delayed metabolic responders, and non-metabolic responders, with a marginal trend toward statistical significance (HR 3·41, P = 0·051), and PFS was significantly superior in early metabolic responders (HR 4·43, P = 0·002). In a group that was ineligible for auto-HSCT, OS and PFS were significantly superior in early metabolic responders. Our results suggested that iPET is of prognostic value and an independent predictor of survival in MCL patients receiving frontline R-CHOP. Therefore, prospective clinical trials of iPET-guided treatment strategies for these patients are warranted.

SUBMITTER: Jeon YW

PROVIDER: S-EPMC7155042 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature

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Prognostic impact of interim positron emission tomography in mantle cell lymphoma patients treated with frontline R-CHOP.

Jeon Young-Woo YW O Joo-Hyun JH Park Kyung-Sin KS Min Gi June GJ Park Sung-Soo SS Yoon Jae-Ho JH Eom Ki-Seong KS Min Chang-Ki CK Cho Seok-Goo SG

British journal of haematology 20191116 6

Although <sup>18</sup> F-fluorodeoxyglucose positron emission tomography (<sup>18</sup> F-FDG PET) is commonly used for initial staging and therapeutic response evaluation in aggressive lymphomas, its prognostic utility for mantle cell lymphoma (MCL) is controversial. Therefore, we retrospectively evaluated the correlations of interim PET (iPET) and end-of-treatment PET (ePET) response with survival outcomes in 89 consecutive advanced MCL patients treated with frontline R-CHOP (rituximab, cyclop ...[more]

PMID: 31733125

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Project description:Fluorine-18-fluoro-2-deoxy-D-glucose (FDG) is widely used as positron-emission-tomography (PET) radiotracer for the detection and staging of human cancer. Tumor uptake of FDG varies substantially between different cancer types and between patients with the same tumor type. The molecular basis for this heterogeneity is unknown. Using cancer cell lines and primary human tumors of distinct histologic origins, we here show that increased FDG uptake is universally associated with coordinate upregulation of genes within the glycolysis, pentose-phosphate, and other related metabolic pathways. In primary human breast cancers, this FDG signature shows significant overlap with established breast cancer signatures for the “basal-like” disease subtype and “poor prognosis”. FDG high breast cancer showed significantly more gene copy number alterations genome wide than FDG low cancers. About 50 % of primary breast cancers with high FDG uptake and FDG gene expression signature show DNA copy gain encompassing the c-myc gene locus and express gene sets regulated by the transcription factor MYC. Our data shows that FDG-PET marks a distinct subset of “basal-like” human breast cancer which is characterized by MYC and prognostically unfavorable gene expression signatures, suggesting that FDG-PET imaging may be useful to risk-stratify patients with locally advanced breast cancer. Our general strategy to identify molecular determinants of FDG-retention through a genome-wide approach consisted of FDG uptake measurements in cancer cell lines and primary human tumors, the selection of samples with particularly high versus low FDG-retention, and subsequent pathway-based analysis of RNA expression data collected from these samples. Cell line RNA was extracted from a 10 cm plate seeded simultaneously and at the same density as the wells for FDG-uptake assays. For primary human tumor samples, RNA was extracted from macrodissected frozen tumor tissue. All cell line RNA samples and the astrocytoma RNA aliquots were hybridized to Affymetrix U133 Plus 2.0 arrays. All primary breast cancer RNA samples were hybridized to Affymetrix U133A arrays.

Dataset Information

Prognostic impact of interim positron emission tomography in mantle cell lymphoma patients treated with frontline R-CHOP.

Publications

Prognostic impact of interim positron emission tomography in mantle cell lymphoma patients treated with frontline R-CHOP.

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