title: Success rates of nuclear short tandem repeat typing from different skeletal elements.
abstract: OBJECTIVE
  To evaluate trends in DNA typing success rates of different skeletal elements from mass graves originating from conflicts that occurred in the former Yugoslavia (Bosnia and Herzegovina and Kosovo) during the 1990s, and to establish correlation between skeletal sample age and success of high throughput short tandem repeat (STR) typing in the large data set of the International Commission on Missing Persons.
  
  
  METHODS
  DNA extraction and short tandem repeat (STR) typing have been attempted on over 25000 skeletal samples. The skeletal samples originated from different geographical locations where the conflicts occurred and from different time periods from 1992 to 1999. DNA preservation in these samples was highly variable, but was often significantly degraded and of limited quantity. For the purpose of this study, processed samples were categorized according to skeletal sample type, sample age since death, and success rates tabulated.
  
  
  RESULTS
  Well-defined general trends in success rates of DNA analyses were observed with respect to the type of bone tested and sample age. The highest success rates were observed with samples from dense cortical bone of weight-bearing leg bones (femur 86.9%), whereas long bones of the arms showed significantly lower success (humerus 46.2%, radius 24.5%, ulna 22.8%). Intact teeth also exhibited high success rates (teeth 82.7%). DNA isolation from other skeletal elements differed considerably in success, making bone sample selection an important factor influencing success.
  
  
  CONCLUSIONS
  The success of DNA typing is related to the type of skeletal sample. By carefully evaluating skeletal material available for forensic DNA testing with regard to sample age and type of skeletal element available, it is possible to increase the success and efficiency of forensic DNA testing.
authors: International Commission on Missing Persons, Sarajevo, Bosnia and Herzegovina.
authors: Ana
authors: A
authors: Milos
authors: Arijana
authors: A
authors: Selmanović
authors: Lejla
authors: L
authors: Smajlović
authors: René L M
authors: RL
authors: Huel
authors: Cheryl
authors: C
authors: Katzmarzyk
authors: Adi
authors: A
authors: Rizvić
authors: Thomas J
authors: TJ
authors: Parsons
mesh_terms: D001842:Bone and Bones / Q000737:chemistry*; D017522:Bosnia and Herzegovina; D004247:DNA / Q000302:isolation & purification*; D016172:DNA Fingerprinting; D018732:Forensic Anthropology / Q000379:methods*; D005553:Forensic Dentistry / Q000379:methods; D018895:Microsatellite Repeats; D014070:Tooth / Q000737:chemistry*; D014857:Warfare
chemical_list: D004247:DNA
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