Work

Lowering and Stabilizing PSA Levels in Advanced-prostate Cancer Patients With Oral Methioninase

Year: 2021

Type: article

Abstract: BACKGROUND/AIM: Methionine addiction is a general and fundamental hallmark of cancer due to the excess use of methionine for transmethylation reactions, termed the "Hoffman Effect". Methionine addiction has been shown to be a highly-effective target for cancer therapy by methionine restriction with oral recombinant methioninase (o-rMETase) in preclinical studies, including patient- derived orthotopic xenograft (PDOX) mouse models of cancer. A clinical study of o-rMETase as a supplement showed a 70% reduction of PSA levels in a patient with bone-metastatic prostate cancer. MATERIALS AND METHODS: In the present study, two advanced prostate-cancer patients took o-rMETase as a supplement for approximately one month. RESULTS: One of the patients taking o-rMETase showed a 38% reduction of PSA levels and the second patient showed a 20% PSA reduction. CONCLUSION: o-rMETase shows promise for treating patients with advanced prostate cancer.

Source: Anticancer Research

DOI: 10.21873/anticanres.14958

Authors: QINGHONG HAN, ROBERT M. HOFFMAN

Institution: AntiCancer (United States)

Language: English

Topic: Cancer Research and Treatments

Subfield: Biotechnology

Field: Biochemistry, Genetics and Molecular Biology

Domain: Life Sciences

SDG: Good health and well-being

Open Access status: hybrid

OpenAlex ID: W3148860823