CRC 385 - Male Only

A Phase I, prospective, double-blind, randomised, placebo-controlled, dose escalation study to assess the safety, tolerability, pharmacokinetics and pharmacodynamics of single and multiple ascending oral doses of KCL-286 and the effects of food in healthy male participants

Damage to nerves in the arm, for example from the trauma possibly caused in a road traffic accident, can result in the nerve roots being torn from the spinal cord, known as a brachial plexus injury. In these situations the main effects often seen are problems with movement (motor control), loss of sensations (sensory control) and pain. Once the nerves have been torn from the spinal cord a scar is formed at the site of the injury and this becomes a barrier to recovery as it prevents the nerves growing back in the spinal cord. Current treatments in place for brachial plexus injuries often do not result in full return of functions or sufficient pain relief. Some treatments used involve surgery to implant nerves; this technique has been shown to result in some return of motor function and easing of pain but not return of sensations and it is thought that this may in part be due to the formation of the scar.


Results of studies in animals have shown that early administration of KCL-286 (the medication being investigated in this study) prevents a scar from forming where the nerves have been torn from the spinal cord and therefore this allows the nerves to grow back preventing the loss of functions, including the loss of sensations.


This study is the first study to give KCL-286 to humans. It will be given to healthy males (who do not have brachial plexus injuries) to investigate whether it has any side effects in humans and also to determine the appropriate doses to investigate in patients with brachial plexus injuries.

Participant Requirements 
  1. You must be aged between 19 and 45
  2. You must not have participated in another clinical trial within 3 months of the first treatment period.
  3. You must have an appropriate work permit (if you are not from the EU)
  4. You must have a Body Mass Index of  ≥ 18 kg/m2 to ≤ 30 kg/m2
  5. Be a non-nicotine user (not smoked or used other nicotine products within 3 months before the screening visit)
  6. Have no clinically relevant medical conditions or allergies
  7. Not taking any medications, herbal supplements, vitamins or minerals, except a maximum of 2g of paracetamol per 24 hours
  8. Be willing to avoid direct sunlight, use sun cream, cover your arms and legs and wear a sunhat and sunglasses when outside for the duration of the study
  9. Not have used a sunbed for 3 months before screening and for the duration of the study and one month after
  10. Be willing to not consume alcohol, caffeine, xanthine and poppy seed containing food/drinks within 48 hours of each visit. At all other times, be willing to limit caffeine to 500mg per day and alcohol to 21 units per week.
  11. Be willing to not consume grapefruit, grapefruit juice, Seville oranges, Seville orange marmalade or other products containing grapefruit or Seville oranges for the duration of the study
  12. Be willing to use condoms with spermicide for the duration of the study and for 3 months after the last visit and any female partners should be on an effective form of contraception during this period
  13. You are willing to take the study medication or placebo (depending on what you have been randomised to) which contains gelatine.
  14. Be available for every required date for the duration of the study
Date Description Location Duration
Visit 1 - Screening Surrey CRC Approximately 5 hours
Visit 2 - Residential Stay Surrey CRC 3 Nights
Visit 3 - Post Study Visit Surrey CRC Approximately 3 hours
Inconvenience Allowance 

You will be reimbursed £750 for your time.

You will also be reimbursed for reasonable travelling expenses incurred to and from the Surrey CRC for this study of up to £40 per visit depending on where you live

Interested in taking part? 

If you would like more information under no obligation, or are interested in taking part and wish to complete a telephone health screen, please contact the Clinical Research Recruitment team on: Freephone 0800 269 847, by email and if you have not done so already, please register with us on here

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