Publications by authors named "Hoyee Leong"

Despite the availability of new treatments, multiple myeloma (MM) is an incurable cancer with nearly all patients relapsing and undergoing multiple lines of treatment. Performing head-to-head comparisons of all treatment options is not feasible. Thus, network meta-analyses play an important role in allowing health-care decision makers to compare the effectiveness of treatment options.

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Background And Objective: Nearly all patients with multiple myeloma undergo multiple rounds of therapy. The phase III BOSTON trial of once-weekly selinexor and once-weekly bortezomib with dexamethasone (XVd) vs twice-weekly bortezomib and dexamethasone (Vd) is the basis for this cost-effectiveness analysis in previously treated multiple myeloma from a US commercial payer perspective over a lifetime horizon.

Methods: A partitioned survival model enabled use of direct overall survival and progression-free survival curves from BOSTON to generate four health states for XVd and Vd: progression-free survival on treatment, progression-free survival off treatment, post-progression, and mortality.

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Purpose: To estimate the budget impact of selinexor, bortezomib, and dexamethasone (XVd) in patients with previously treated multiple myeloma (MM) from the perspective of a private third-party payer and Medicare in the US.

Methods: The introduction of XVd as an option for patients with previously treated MM compared to no introduction of XVd was considered from a private third-party US payer (with 1,000,000 members) and a Medicare perspective in one-year increments for 3 years. Total annual treatment costs were calculated as the sum of drug costs, costs of treating serious treatment emergent adverse events (grade ≥3), ongoing best supportive care costs, and mortality costs.

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Compare health-related quality of life (HRQoL) of selinexor versus placebo in patients with dedifferentiated liposarcoma. HRQoL was assessed at baseline and day 1 of each cycle using the European Organization for Research and Treatment of Cancer 30-item core quality of life questionnaire. Results were reported from baseline to day 169 (where exposure to treatment was maximized while maintaining adequate sample size).

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Traditionally, new scientific advances have been applied quickly to the leukemias based on the ease with which relatively pure samples of malignant cells can be obtained. Currently, our arsenal of approaches used to characterize an individual's acute myeloid leukemia (AML) combines hematopathologic evaluation, flow cytometry, cytogenetic analysis, and molecular studies focused on a few key genes. The advent of high-throughput methods capable of full-genome evaluation presents new options for a revolutionary change in the way we diagnose, characterize, and treat AML.

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Previous studies indicate that green tea extract may inhibit breast cancer progression by blocking angiogenesis, although the molecular mechanisms are not well defined. We demonstrate that administration of Polyphenon E (Poly E), a standardized green tea extract, inhibited MDA-MB231 breast cancer and human dermal microvascular endothelial (HMVEC) cell migration and the expression of vascular endothelial growth factor (VEGF) and matrix metalloproteinase 9 (MMP9). In addition, Poly E inhibited VEGF-induced neovascularization in vivo.

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Purpose: The unlabeled uses of intravenous immune globulin (IVIG) were reviewed.

Summary: A literature review was conducted to identify studies examining the unlabeled uses of IVIG. A review of 138 clinical trial abstracts identified 10 trials examining 2 labeled uses (635 patients) and 128 trials examining 61 different off-label uses (6781 patients).

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Previous studies show inhibitory effects of green tea in chemically induced mammary tumors or human tumor explants, but not in spontaneous tumor models that are more representative of human breast cancer. The C3(1)/SV40 mouse model is particularly suited for breast cancer prevention studies because it produces spontaneous ductal adenocarcinomas and a predictable time course for mammary tumorigenesis through a multistage progression similar to that occurring in humans. We therefore used this model to test the chemoprotective effects of green tea.

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Transcriptional activation of estrogen receptor alpha (ERalpha) is regulated by the ligand-dependent activation function 2 and the constitutively active N-terminal activation function 1. To identify ERalpha N-terminal-specific coregulators, we screened a breast cDNA library by T7 phage display and isolated histone deacetylase 4 (HDAC4). HDAC4 interacts with the ERalpha N terminus both in vitro and in vivo.

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We investigated the mechanism of ligand-independent activation of the estrogen receptor (ER) by 3,3'-diindolylmethane (DIM), a promising anticancer agent derived from vegetables of the Brassica genus, in Ishikawa and HEC-1B human endometrial cancer cells. DIM stimulated the activity of an ER-responsive reporter by over 40-fold, equivalent to the maximum induction produced by estradiol (E2), whereas cotreatment of cells with the ER antagonist, ICI-182,780 (ICI), abolished the stimulatory effect of DIM. DIM also induced the expressions of the endogenous genes, TGF-alpha, alkaline phosphatase, and progesterone receptor similar to levels induced by E2.

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