Life and career
He was born on February 1, 1965, in Şeyhler, in Emet district of Kütahya. He completed his primary and secondary education in Kütahya. Kasap graduated from the Dokuz Eylül University Faculty of Medicine.
In the 2018 Turkish general election, Kasap was elected to the Grand National Assembly of Turkey. He is representing Kütahya as a CHP member. He was reelected in 2023. After Hasan Bitmez died and Felicity and Future Alliance parliamentary group was briefly collapsed due to parliamentary rules, he switched parties as the will of the CHP.
After Felicity and Future Alliance ended and formed the New Path (which has a large number of MPs), Kasap returned to CHP.