Albireo to present study results of A3309 in sufferers with chronic constipation at 2010 DDW annual meeting Albireo today announced that additional clinical data can be reported from a recently available study assessing the security, tolerability and efficacy of A3309 in patients with chronic constipation. A3309 is a first-in-class investigational substance for the treatment of irritable bowel syndrome with constipation and chronic constipation .For those who have the inclination to create keloids, no surgical technique can be used. If you can develop keloid with acne injury, more keloids will be formed by further medical procedures. Steroid injections may be used to treat keloids. In some instances topical retinoic acid is normally applied on the keloids. This article is only for informative purposes. This article is not intended to be a medical advise and it is not really a substitute for professional medical advice. Please check with your doctor for your medical problems. Please follow any suggestion given in this post only after consulting your doctor.