Abstract: A method of diagnosing pancreatic cancer in a patient by detecting a level of one or more glycoforms of a Lewis antigen and a level of the one or more glycoforms of MUC5AC. The patient diagnosed with pancreatic cancer then may be treated for this disease. Also, a method for detecting a level of a glycan in a sample which includes using a capture reagent to immobilize the glycan on a substrate; exposing the immobilized glycan to a detection reagent; detecting the level of the immobilized glycan; and combining the biological sample with one or more pre-capture enzymes and/or exposing the immobilized glycan to one or more pre-detection enzymes.

Abstract: A method of diagnosing pancreatic cancer in a patient by detecting a level of one or more glycoforms of a Lewis antigen and a level of the one or more glycoforms of MUC5AC. The patient diagnosed with pancreatic cancer then may be treated for this disease. Also, a method for detecting a level of a glycan in a sample which includes using a capture reagent to immobilize the glycan on a substrate; exposing the immobilized glycan to a detection reagent; detecting the level of the immobilized glycan; and combining the biological sample with one or more pre-capture enzymes and/or exposing the immobilized glycan to one or more pre-detection enzymes.

Abstract: A method of diagnosing pancreatic cancer in a patient by detecting a level of one or more glycoforms of a Lewis antigen and a level of the one or more glycoforms of MUC5AC. The patient diagnosed with pancreatic cancer then may be treated for this disease. Also, a method for detecting a level of a glycan in a sample which includes using a capture reagent to immobilize the glycan on a substrate; exposing the immobilized glycan to a detection reagent; detecting the level of the immobilized glycan; and combining the biological sample with one or more pre-capture enzymes and/or exposing the immobilized glycan to one or more pre-detection enzymes.

Abstract: An antibody microarray screen including a substrate, monoclonal and polyclonal antibodies that are purified immunoglobins, wherein the antibodies are spotted on predetermined positions on the substrate, and fluids unprocessed for immunoglobulin isolation (e.g., anti-sera, ascites fluids, or hybridoma culture media), wherein the unprocessed fluids are spotted on the predetermined positions on the substrate. Production of drug-metabolizing enzyme antibody microarrays containing closely related cytochromes P450 is disclosed. Methods of manufacturing an antibody microarray, an internal control molecule for use in an antibody microarray, a method of determining optimal spotting concentrations of IgG and a method to increase a detectable signal with microarray analysis are disclosed.

Abstract: Methods and related kits for differentiating pancreatic cancer from a benign pancreatic disease. The method includes assaying a patient biological sample for a total level of CA 19-9 antigen and for a glycan level in specific mucin(s), and comparing the total level of CA 19-9 antigen and the glycan level in the specific mucin(s) to statistically validated thresholds, wherein a different level of total CA 19-9 antigen in the patient biological sample as compared to a statistically validated threshold and a different level of glycan level in the specific mucin(s) as compared to statistically validated thresholds indicate pancreatic cancer in the patient rather than a benign pancreatic disease.

Abstract: A method of diagnosing the malignant potential of a pancreatic cystic lesion in a subject including: detecting a glycan alteration in MUC5AC in a sample of pancreatic cystic lesion fluid from a subject, determining whether the glycan alteration is differentially present in the sample, and diagnosing the malignant potential of the pancreatic cystic lesion. A method of diagnosing the malignant potential of a pancreatic cystic lesion in a subject including: (a) detecting a glycan alteration in MUC5AC in a sample of pancreatic cystic lesion fluid from a subject, (b) detecting CA 19-9 in the sample, (c) determining whether the glycan alteration and CA 19-9 are differentially present in the sample, and (d) diagnosing the malignant potential of the pancreatic cystic lesion. Related methods of treatment and kits also are included.

Abstract: Methods and related kits for differentiating pancreatic cancer from a benign pancreatic disease. The method includes assaying a patient biological sample for a total level of CA 19-9 antigen and for a glycan level in specific mucin(s), and comparing the total level of CA 19-9 antigen and the glycan level in the specific mucin(s) to statistically validated thresholds, wherein a different level of total CA 19-9 antigen in the patient biological sample as compared to a statistically validated threshold and a different level of glycan level in the specific mucin(s) as compared to statistically validated thresholds indicate pancreatic cancer in the patient rather than a benign pancreatic disease.

Abstract: The invention includes a high-through-put method of screening for a biomarker indicative of a disease, including the identification of a glycan alteration in a protein of a diseased patient. Further, the invention includes methods utilizing a microarray to measure the glycan level of a protein.

Abstract: An antibody microarray screen including a substrate, monoclonal and polyclonal antibodies that are purified immunoglobins, wherein the antibodies are spotted on predetermined positions on the substrate, and fluids unprocessed for immunoglobulin isolation (e.g., anti-sera, ascites fluids, or hybridoma culture media), wherein the unprocessed fluids are spotted on the predetermined positions on the substrate. Production of drug-metabolizing enzyme antibody microarrays containing closely related cytochromes P450 is disclosed. Methods of manufacturing an antibody microarray, an internal control molecule for use in an antibody microarray, a method of determining optimal spotting concentrations of IgG and a method to increase a detectable signal with microarray analysis are disclosed.