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Association Between BMP-2 and Carcinogenicity.

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Association Between BMP-2 and Carcinogenicity.

Spine (Phila Pa 1976). 2015 Dec;40(23):1862-71

Authors: Skovrlj B, Koehler SM, Anderson PA, Qureshi SA, Hecht AC, Iatridis JC, Cho SK

Abstract
STUDY DESIGN: Literature review.
OBJECTIVE: To evaluate the association between recombinant human bone morphogenetic protein-2 (rhBMP-2) and malignancy.
SUMMARY OF BACKGROUND DATA: The use of rhBMP-2 in spine surgery has been the topic of much debate as studies assessing the association between rhBMP-2 and malignancy have come to conflicting conclusions.
METHODS: A systematic review of the literature was performed using the PubMed-National Library of Medicine/National Institute of Health databases. Only non-clinical studies directly addressing BMP-2 and cancer were included. Articles were categorized by study type (animal, in vitro cell line/human/animal), primary malignancy, cancer attributes, and whether BMP-2 was pro-malignancy or not.
RESULTS: A total of 4,131 articles were reviewed. Of those, 515 articles made reference to both BMP-2 and cancer, 99 of which were found to directly examine the role of BMP-2 in cancer. Seventy-five studies were in vitro and 24 were animal studies. Forty-three studies concluded that BMP-2 enhanced cancer function, whereas 18 studies found that BMP-2 suppressed malignancy. Thirty-six studies did not examine whether BMP-2 enhanced or suppressed cancer function. Fifteen studies demonstrated BMP-2 dose dependence (9 enhancement, 6 suppression) and one study demonstrated no dose dependence. Nine studies demonstrated BMP-2 time dependence (6 enhancement, 3 suppression). However, no study demonstrated that BMP-2 caused cancer de novo.
CONCLUSION: Currently, conflicting data exist with regard to the effect of exogenous BMP-2 on cancer. The majority of studies addressed the role of BMP-2 in prostate (17%), breast (17%), and lung (15%) cancers. Most were in vitro studies (75%) and examined cancer invasiveness and metastatic potential (37%). Of 99 studies, there was no demonstration of BMP-2 causing cancer de novo. However, 43% of studies suggested that BMP-2 enhances tumor function, motivating more definitive research on the topic that also includes clinically meaningful dose- and time-dependence.
LEVEL OF EVIDENCE: 2.

PMID: 26274524 [PubMed – indexed for MEDLINE]

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