Clinical Study: Midkine and LNC RNA HOTAIR as Biomarkers in Thyroid cancer, page-2

Another study with midkine relevance listed on that page is from 2015 and has status "unknown".

A further study from 2017 is still listed as "recruiting":

Relation Between Cachexia, Diabetes and periNeural Invasion in PANcreatic Cancer- Biomarkers Substudy (CDNPAN)

The purpose of this study is to determine the interrelationship between cachexia, neural invasion and diabetes in patients with pancreatic cancer. Thus the investigators propose to identify the protein expression levels of Activin and Midkine in plasma of patients with different stages of pancreatic adenocarcinoma compared with healthy patients and to evaluate the possible correlation with diabetes, tumor size and tumor stage.

Source:

https://clinicaltrials.gov/ct2/show/NCT03042442?term=Midkine&rank=3