Teruxyne

"I remember the colony world of Teruxyne given to nightmare and corruption of the flesh beneath a dark night sky... It is a forbidden place, now and forever after, claimed by the virulent Sinners’ Plague."
–From the Journals of Inquisitor Felroth Gelt, 3.937.750.M41
Teruxyne is a dead, quarantined world within the Drusus Marches of the Calixis Sector, and suffered greatly from the nefarious works of the arch-heretek Sar Resque, creator of the Sinners' Plagues that ravage the sub-sector. It took a week to purge the hive colony of life, and none beyond the Holy Ordos has returned to it since. The mutant survivors of Resque's plagues remain there, lost and damned, herded by the Transfigured.