1. Department of Pharmacology, Yale University School of Medicine, New Haven, CT 06520, USA.
2. Kolltan Pharmaceuticals, New Haven, CT 06520, USA.
3. Keck Foundation Biotechnology Resource Laboratory, Yale University, New Haven, CT 06520, USA.
4. Department of Neurosurgery, Yale University School of Medicine, New Haven, CT 06520, USA.
5. Department of Genetics, Yale University School of Medicine, New Haven, CT 06520, USA.