Trofile assay
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
The Trofile (TM) assay is a blood test that identifies the tropism of a patient's HIV.
A molecular assay, Trofile was developed by Monogram Biosciences for use in HIV treatment. The assay's purpose is to identify the tropism of an individual patient's HIV strain – R5, X4, or a combination of these known as dual/mixed (D/M). The results show whether the patient is infected with virus that enters cells using the R5 co-receptor, the X4 co-receptor, or both (dual/mixed).
Patients with strains of HIV that prefer the R5 receptor tend to remain healthy longer than those with the strains that prefer X4. However, over the course of the disease, a patient's viral population may undergo a "tropism switch" from R5 to X4.
References
- Development and characterization of a novel single-cycle recombinant virus assay to determine human immunodeficiency virus type 1 coreceptor tropism. Antimicrob Agents Chemother. 2007;51(2):566-575. (Whitcomb JM, Huang W, Fransen S, et al.)
External links
- TrofileAssay.com Monogram Biosciences' Trofile assay website
- Four Studies Affirm Significance Of Monogram's Trofile(TM) HIV Co-Receptor Tropism Assay from Medical News Today, August 14, 2006
- Monogram Provides Update On Trofile(TM) Assay from Medical News Today, March 2, 2007
- Scientific Data Highlights Pivotal Role Of Monogram's Molecular Diagnostics In Development And Use Of New HIV Treatments from Medical News Today, March 7, 2007