Official

　"Rare·Rare Disease is treatment because the number of patients is small and the mechanism of the disease is complicated.·It is a disease that is said to be in some cases where drug discovery research has hardly progressed.　　　　　　　　　Since February 29, 2009, February 29, the leap year, is "rarity" on this day.·Activities began in Sweden with the aim of raising awareness of refractory diseases, and since then, the last day of February was marked as "World Rare".·Events are now being held around the world as the Day of Refractory Diseases (RDD).　　　Japan also agrees with the purpose of RDD and has been participating since 2010.　　　On February 28, the RDD in 2021, Tokyo Tower was lit up in a special RDD logo color.　　　　　　　　　　　　　　　　　　　There are approximately 7,000 rare diseases worldwide, with a total of 350 million cases, half of which are reported as children. This event serves as a bridge between the affected people and society.·It is expected to be an opportunity to raise awareness of intractable diseases.　From the Sumida River Terrace in Kachidoki, over the Tsukiji Ohashi, which is lit up in white, you can see the glow of the "RDD color" that appeals to the theme of RDD2021, "We stand in solidarity with the RARE community-".