Methods for identifying and monitoring drug side effects
The present invention relates generally to methods for identifying drug side effects by detecting perturbations in organ-specific molecular blood fingerprints. The invention further relates to methods for identifying drug-specific organ-specific molecular blood fingerprints. As such, the present invention provides compositions comprising organ-specific proteins, detection reagents for detecting such proteins, and panels and arrays for determining organ-specific molecular blood fingerprints.
1. A method for determining the presence or absence of a drug side effect in a subject taking a drug for which a first organ is expected to be the therapeutic target wherein said side effect is associated with a second organ different from said first organ and wherein said second organ is not the therapeutic target of the drug comprising,
(a) detecting a level of each of a plurality of organ-specific proteins in a test blood sample from the subject, wherein the plurality of organ-specific proteins are secreted from said second organ;
(b) comparing said level of each of the plurality of said organ-specific proteins in said test blood sample to a level of each of the plurality of said organ-specific proteins in a control sample of blood from one or more subjects who have not taken said drug wherein the organ-specific proteins comprises at least 5 organ-specific proteins;
wherein a statistically significant altered level of one or more of the plurality of said organ-specific proteins in the test blood sample as compared to said control sample is indicative of the presence of a drug side effect in said subject.
2. The method of claim 1 wherein the level of each of the plurality of organ-specific proteins is detected using a method which is mass spectrometry, or an immunoassay.
3. The method of claim 2 wherein the level of each of the plurality of organ-specific proteins is measured using tandem mass spectrometry, or using ELISA or using an antibody array.
4. The method of claim 1 wherein the organ-specific proteins comprise liver-specific proteins, lung-specific proteins or kidney-specific proteins.
5. The method of claim 1 wherein the organ-specific proteins comprise at least 10 organ-specific proteins.
6. The method of claim 1 wherein the organ-specific proteins comprise at least 20 organ-specific proteins.
7. The method of claim 4 wherein the organ-specific proteins are lung-specific proteins.