Method of evaluating gastric cancer, gastric cancer-evaluating apparatus, gastric cancer-evaluating method, gastric cancer-evaluating system, gastric cancer-evaluating program and recording medium

A gastric cancer-evaluating method of evaluating a gastric cancer state in a subject to be evaluated, the method is carried out with an information processing apparatus including a control unit and a memory unit, the method comprising:

• (i) a discriminant value calculating step of calculating a discriminant value that is a value of a multivariate discriminant with a concentration of an amino acid as an explanatory variable, based on both (a) a concentration value of at least one of Asn, Cys, His, Met, Orn, Phe, Trp, Pro, Lys, Leu, Glu, Arg, Ala, Thr, and Tyr contained in previously obtained amino acid concentration data of the subject on the concentration value of the amino acid and (b) the multivariate discriminant containing at least one of Asn, Cys, His, Met, Orn, Phe, Trp, Pro, Lys, Leu, Glu, Arg, Ala, Thr, and Tyr as the explanatory variable, stored in the memory unit;
• and
• (ii) a discriminant value criterion evaluating step of evaluating the gastric cancer state in the subject based on the discriminant value calculated at the discriminant value calculating step,
• wherein the steps (i) and (ii) are executed by the control unit.

A gastric cancer-evaluating system comprising a gastric cancer-evaluating apparatus including a control unit and a memory unit to evaluate a gastric cancer state in a subject to be evaluated and an information communication terminal apparatus that provides amino acid concentration data of the subject on a concentration value of an amino acid connected to each other communicatively via a network,

• wherein the information communication terminal apparatus includes:
• an amino acid concentration data-sending unit that transmits the amino acid concentration data of the subject to the gastric cancer-evaluating apparatus;
• and
• an evaluation result-receiving unit that receives an evaluation result of the gastric cancer state of the subject transmitted from the gastric cancer-evaluating apparatus,
• wherein the control unit of the gastric cancer-evaluating apparatus includes:
• an amino acid concentration data-receiving unit that receives the amino acid concentration data of the subject transmitted from the information communication terminal apparatus;
• a discriminant value-calculating unit that calculates a discriminant value that is a value of a multivariate discriminant with a concentration of the amino acid as an explanatory variable, based on both (a) the concentration value of at least one of Asn, Cys, His, Met, Orn, Phe, Trp, Pro, Lys, Leu, Glu, Arg, Ala, Thr, and Tyr contained in the amino acid concentration data of the subject received by the amino acid concentration data-receiving unit and (b) the multivariate discriminant containing at least one of Asn, Cys, His, Met, Orn, Phe, Trp, Pro, Lys, Leu, Glu, Arg, Ala, Thr, and Tyr as the explanatory variable, stored in the memory unit;
• a discriminant value criterion-evaluating unit that evaluates the gastric cancer state in the subject based on the discriminant value calculated by the discriminant value-calculating unit;
• and
• an evaluation result-sending unit that transmits the evaluation result of the subject obtained by the discriminant value criterion-evaluating unit to the information communication terminal apparatus.

A gastric cancer-evaluating program product that makes an information processing apparatus including a control unit and a memory unit execute a method of evaluating a gastric cancer state in a subject to be evaluated, the method comprising:

• (i) a discriminant value calculating step of calculating a discriminant value that is a value of a multivariate discriminant with a concentration of an amino acid as an explanatory variable, based on both (a) a concentration value of at least one of Asn, Cys, His, Met, Orn, Phe, Trp, Pro, Lys, Leu, Glu, Arg, Ala, Thr, and Tyr contained in previously obtained amino acid concentration data of the subject on the concentration value of the amino acid and (b) the multivariate discriminant containing at least one of Asn, Cys, His, Met, Orn, Phe, Trp, Pro, Lys, Leu, Glu, Arg, Ala, Thr, and Tyr as the explanatory variable, stored in the memory unit;
• and
• (ii) a discriminant value criterion evaluating step of evaluating the gastric cancer state in the subject based on the discriminant value calculated at the discriminant value calculating step,
• wherein the steps (i) and (ii) are executed by the control unit.