"failed cases" is correct and usable in written English.
You can use it to refer to instances in which something has gone wrong or ended in failure. For example, "The public attorney's office has a high rate of successful cases, but they also have several failed cases on record."
"There may be other remedies, but we are not here concerned with that," the judges said in relation to the five failed cases.
Surgical Heller myotomy has high rates of successful long-term results, but failed cases still remain.
Six physicians had failed cases and mainly on cardiac examination (eight failures out of ten).
The results in Figure 10 are averaged only over valid estimates and exclude the failed cases.
Typically, the source of failure is unclear, and scoring metrics appear similar between successful and failed cases.
Several features can be found by examining these failed cases, which can help further improve our MODPEP algorithm.
An interesting aspect of that study is that cracks were present in only 1% of the failed cases assessed under the operating microscope.
First, all the failed cases are medium or large-size peptides with more than 10 amino acids, as longer peptides tend to be more challenging to be predicted.
Further, while anatomical positioning of the implant and material properties affect the risk of fracture, we examined whether these failures are strongly related to the notched elevated rim design feature that is common to the four failed cases presented here.
However, negative data are difficult to collect because literature prefer to present successful cases rather than failed cases, i.e., in which a molecule does not interact with a protein.
In fact, it has been demonstrated that household plants do not seem suitable in some arid and cold areas; for example many failed cases have been reported in Inner Mongolia and Heilongjiang (Cui and Ma 2009), where alternative energy sources like wind or solar power may be more effective for family use.
