Method and system for determining whether a drug will be effective on a patient with a disease
First Claim
1. A method of identifying a non-small cell lung cancer patient as being likely to benefit from treatment with gefitinib or erlotinib targeting an epidermal growth factor receptor pathway or not likely to benefit from treatment with gefitinib or erlotinib, comprising the steps of:
- a) obtaining a mass spectrum from a blood-based sample from the non-small cell lung cancer patient;
b) performing one or more predefined pre-processing steps on the mass spectrum obtained in step a);
c) obtaining integrated intensity values of selected features in said spectrum at one or more predefined m/z ranges after the pre-processing steps on the mass spectrum in step b) have been performed;
d) using the values obtained in step c) in a classification algorithm using a training set comprising class-labeled spectra produced from blood-based samples from other on-small cell lung cancer patients to identify the patient as being either likely or not likely to benefit from gefitinib or erlotinib.
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Abstract
A process of determining whether a patient with a disease or disorder will be responsive to a drug, used to treat the disease or disorder, including obtaining a test spectrum produced by a mass spectrometer from a serum produced from the patient. The test spectrum may be processed to determine a relation to a group of class labeled spectra produced from respective serum from other patients having the or similar clinical stage same disease or disorder and known to have responded or not responded to the drug. Based on the relation of the test spectrum to the group of class labeled spectra, a determination may be made as to whether the patient will be responsive to the drug.
89 Citations
18 Claims
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1. A method of identifying a non-small cell lung cancer patient as being likely to benefit from treatment with gefitinib or erlotinib targeting an epidermal growth factor receptor pathway or not likely to benefit from treatment with gefitinib or erlotinib, comprising the steps of:
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a) obtaining a mass spectrum from a blood-based sample from the non-small cell lung cancer patient; b) performing one or more predefined pre-processing steps on the mass spectrum obtained in step a); c) obtaining integrated intensity values of selected features in said spectrum at one or more predefined m/z ranges after the pre-processing steps on the mass spectrum in step b) have been performed; d) using the values obtained in step c) in a classification algorithm using a training set comprising class-labeled spectra produced from blood-based samples from other on-small cell lung cancer patients to identify the patient as being either likely or not likely to benefit from gefitinib or erlotinib. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. Apparatus configured to identify a non-small cell lung cancer patient as being likely to benefit from treatment with gefitinib or erlotinib targeting an epidermal growth factor receptor pathway or not likely to benefit from treatment with gefitinib or erlotinib, comprising:
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a storage device storing a mass spectrum of a blood-based sample from the non-small cell lung cancer non-small cell lung cancer patient, and a processor executing software, instructions configured to a) obtain integrated intensity values of features in said mass spectrum at one or more m/z ranges, the m/z ranges selected from the group of m/z ranges consisting of; 5732 to 5795 5811 to 5875 6398 to 6469 11376 to 11515 11459 to 11599 11614 to 11756 11687 to 11831 11830 to 11976 12375 to 12529 23183 to 23525 23279 to 23622 65902 to 67502; and b) apply a classification algorithm operating on the values of the features in the spectrum at the selected one or more m/z ranges and using a training set comprising class-labeled spectra produced from blood-based samples from other non-small cell lung cancer patients to identify the patient as being either likely or not likely to benefit from gefitinib or erlotinib targeting an epidermal growth factor receptor pathway. - View Dependent Claims (15, 16, 17, 18)
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Specification