come up short = 不足、物足りない、

A study published in 2018 tried to determine whether the current population of Flores had any genetic links to Homo floresiensis. Though the researchers found evidence of Neanderthal and Denisovan DNA among villagers, they came up short of Homo floresiensis DNA.

Fossils fill out our family trees - by Nicholas St. Fleur NYT April 17 2019 先人類

から