Abstract: [Problem] A compound useful as an active ingredient of a pharmaceutical composition for treating pancreatic cancer is provided. [Solution] The present inventors have studied about a compound that is useful as an active ingredient of a pharmaceutical composition for treating pancreatic cancer and have found that a 4-aminoquinazoline compound has an excellent G12D mutant KRAS inhibition activity and can be used as a therapeutic agent for pancreatic cancer, thus completing the present invention. The 4-aminoquinazoline compound of the present invention or a salt thereof can be used as a therapeutic agent for pancreatic cancer.

Abstract: A display device includes a display section in which a plurality of pixels are arrayed in a matrix, a plurality of scan lines which select pixels, a plurality of signal lines which supply image signals to the selected pixels, and color filters that are arranged so as to correspond to color displays of the pixels. In the device, the display section includes an effective pixel portion and a frame portion that surrounds the effective pixel portion, and the frame portion and a wiring circuit of the effective pixel portion are covered with light-shielding layers, the light-shielding layers being separated from each other at a certain separation location in the display section, and a plurality of color filters having different colors are arranged by being stacked at the separation location.

Abstract: A balloon catheter includes a shaft inserted into a body; a balloon attached to the shaft on a distal end side and is expandable by an expansion fluid supplied from a side of a proximal end of the shaft; an elastic band wound around an outer periphery of an intermediate portion between a distal end portion and a proximal end portion of the balloon , and is configured to limit expansion of the balloon at the intermediate portion; and a covering member covering an outer periphery of the elastic band. The balloon is expandable to a maximum expansion diameter from a folded state, in accordance with pressure of the expansion fluid, the elastic band is expandable beyond the secured diameter, by being elastically deformed by the balloon expanding, and the covering member is expandable by being elastically deformed by the balloon or the elastic band expanding.