Upload
rbjamieson
View
186
Download
0
Embed Size (px)
Citation preview
February 2013
Rapid DNA – Disruptive New Technology
Breaking the Cycle of Repeat Crimes
By Bruce Jamieson
Sr. Director Sales, IntegenX Human Identification Products
[email protected] (M) +1 408 813 2344
Introduction: DNA as a forensic tool has been used to link suspects to crime scene evidence for
the past three decades. The latest breakthrough in DNA forensics, Rapid DNA testing, promises
to be a disruptive new technology that will dramatically improve the effectiveness of criminal
justice systems worldwide. By reducing the turnaround time of suspect samples from days, weeks
or even months to 90 minutes, law enforcement officials, forensic scientists and prosecutors can
apply this tool to a wider variety of crimes. They are preparing for this amazing breakthrough by
validating the technology, running pilot studies and examining workflows to make sure they can
quickly take full advantage of Rapid DNA. This paper describes the current state of DNA as a
forensics tool, the emerging technology of Rapid DNA, and some early uses of the first
commercial implementation of Rapid DNA – the IntegenX RapidHIT™ 200 Human
Identification System.
DNA in Forensics, current situation
DNA evidence – a human identification
technique based on measurements of the length
of pre-determined locations, or loci, on the
human genome, is far more accurate than
physical fingerprints. It is often left behind
crime scenes in the form of blood, saliva on
drink bottles and cigarette butts, and even by
touching surfaces such as broken glass, door
knobs and window latches, affording many more
opportunities to collect crime scene evidence
than traditional fingerprints. Concerns of
violating genetic privacy are unfounded as this
type of DNA analysis does not indicate any
healthcare information. The loci chosen for
identification purposes do not code for any
known physical or genetic characteristics and is
therefore not associated with privacy issues
related to genetic disposition to inherited
diseases. A powerful tool, DNA identification is
most often used for violent crimes (murders and
sexual assaults) and other major crimes as
forensic capacity allows. As our reliance on
DNA evidence has grown, so have crime lab
backlogs. In the U.S., state, regional and local
crime labs are hard pressed to keep up with
demand in spite of the growing use of highly
automated workstations that perform the
majority of routine tasks such as extraction,
purification, amplification by PCR, separation
by capillary electrophoresis and detection. Data
analysis can also be automated with forensic
review for final determination. However, once
DNA profiles from suspects and/or crime scene
evidence have been determined in the crime lab,
the value comes from comparing suspect
samples to crime scenes – either the current
crime scene or past unsolved cases. Exoneration
of suspects that don’t match the crime scene data
prevents unnecessary law enforcement effort and
costs of investigating the wrong suspects, and
focuses efforts and financial resources on the
right suspects. To accomplish this requires the
use of one or more data bases to search suspect
profiles against crime scene evidence. Most
crimes are not singular events but repeated by
the same perpetrators over and over until caught
and prosecuted. The U.S. National Offender
Database, called CODIS (Combined DNA Index
System) is a set of national, state and local
databases that provide both a framework and
data for matching suspects to current and past
crimes. Access to CODIS is provided to
qualifying, accredited government labs - the
same labs that process the DNA suspect and
crime scene samples. The opportunity to expand
the use of DNA to more crimes, and more types
of crimes would require these labs that are
already at or beyond their capacity to process
considerably more samples. If the use of DNA is
to expanded into high-volume property crimes
then capacity must be expanded. This can be
done by spending considerably more tax dollars
on lab space, equipment and personnel, or by
using Rapid DNA to help with capacity.
There is another consideration as well - while
CODIS is effective for violent crimes at the
national level, most high-volume crimes are
local. Therefore local database access must be
expanded in order to populate local crime scene
data and suspect data to match at the local or
state levels. This could make use of the local
component of CODIS (called LDIS) or could be
through the use of private databases that are
becoming more prevalent due to their ease of
access to a wider spectrum of local law
enforcement agencies and private contract
service labs.
Rapid DNA for More Crimes and More
Types of Crimes
A study conducted by five cities under a
Department of Justice grant made the following
bold claims in an April 2008 article (Roman):
• Property crime cases where DNA evidence is
processed have more than twice as many
suspects identified, twice as many suspects
arrested, and more than twice as many cases
accepted for prosecution compared with
traditional investigation:
• DNA is at least five times as likely to result in
a suspect identification compared with
fingerprints;
• Suspects identified by DNA had at least twice
as many prior felony arrests and convictions as
those identified by traditional investigation;
• Blood evidence results in better case outcomes
than other biological evidence, particularly
evidence from items that were handled or
touched;
• Biological material collected by forensic
technicians is no more likely to result in a
suspect being identified than biological material
collected by patrol officers.
With such clear benefit to society, why hasn’t
DNA been expanded to more crimes today, as
that study was done over 5 years ago? The issue
is how to expand existing forensic capacity to
handle a dramatically increased sample load that
would occur from the use of DNA to investigate
high-volume property crimes. Crime labs with
existing methods and staffing levels are already
running at their capacity with the current
workload of processing DNA, supporting violent
crimes, and are typically not able to consider
expanding the use of DNA to higher volume
property crimes. What’s called for is a
breakthrough in technology, and Rapid DNA
holds the promise of doing just that.
The FBI/DoD/DHS Task Force on Rapid DNA
has defined a new vision for Rapid DNA“…will
provide the Nation’s law enforcement agencies
the capability to collect and develop an arrested
individual's DNA during the normal time it
takes to process a subject at intake…” (Urban)
This suggests several hurdles including
processing an arrestee’s DNA in the time they
can be held, and performing the processing local
to the arrest. Typically the vision is to process
suspect/arrestee samples at the booking station.
This would require speed and automation,
similar to how breath alcohol analyzers operate
today. Most booking stations have breathalyzers
that can be operated by trained law enforcement
officers, so that evidence can be collected upon
intake. For DNA to be used more broadly this
model must be met – processing DNA from
suspects must be quick and easy.
IntegenX RapidHIT™ 200 Human
Identification System
Described as a “DNA Lab in a Box”, the
RapidHIT™ from IntegenX easily meets the
criteria set out by the FBI for rapid DNA as it
processes 5 suspect samples in 90 minutes, is
fully automated and can be placed in a booking
station, while connected to a crime lab
electronically for data review and technical
oversight. Cartridge based, the chemistry is the
same as used by crime labs and can be setup in
less than 5 minutes and is self-contained.
Everything needed for a run of 5 suspect
samples is contained on a set of small cartridges
easily inserted into the RapidHIT. Upon
completion, all waste goes back into the
cartridges. By changing out the used cartridges
for fresh, the system is again ready to run in
minutes. Law enforcement officers have been
successfully trained to gather DNA evidence
samples, and have been effective at running the
RapidHIT with proper forensic oversight.
This should be a game changer!
Disruptive Technologies are Messy
Introducing innovative new technologies is not a
task for everyone. Disrupting existing work
flows in order to re-engineer a process to allow
the insertion of a disruptive new technology
requires considerable effort and causes trouble
for those involved. The early adopters, or
pioneers, of new technologies are those that
embrace the new capability because they can see
the eventual benefits. Holding the vision of a
better way in mind, they push through barriers,
overcome opposition (“We’ve always done it
this way”) and drive toward successful
integration of a new technique into the everyday
work flow. Rewards eventually come, but the
process requires perseverance and fortitude in
order to transform our world. Rapid DNA is
likely such a disruptive technology and requires
effort by the pioneers from the forensics
community, law enforcement, and prosecutors.
Some of these pioneers are already at work,
examining existing work flows, testing Rapid
DNA and conducting pilot studies to determine
the limits, operating parameters and use cases
for this outstanding new tool.
Rapid DNA in Action
One of the highly valuable uses for Rapid DNA
is to identify individuals and families seeking
asylum outside the U.S. as refugees. A
RapidHIT has been validated and will be used in
a pilot study for refugees using DNA to identify
individuals and make sure they are not
connected with any known crimes. It can also be
used to check familial relationships to assure
that children seeking asylum are related to the
claimed parents. Should this prove successful,
implementation globally would be highly
valuable to the U.S. government and other
countries.
A mid-sized city in central Florida, Palm Bay,
has been successfully using DNA to fight high-
volume property crimes for over 6 years. This
required developing a relationship with a private
contract service organization, DNA Si:
Laboratories of Burlington, NC, to process
property crime and suspect samples and build a
local database. In short order, this system started
linking suspects to crimes and yielded a
dramatic reduction in high volume crimes
(nearly a 40% decrease over a four year study)
while increasing the case closure rate for Palm
Bay Police Department to nearly three times the
national average (Blackledge).
This positive experience with expanding the use
of DNA into high-volume property crimes has
provided the basis for Palm Bay P.D. and their
partner lab, DNA Si: Laboratories, to be the first
police agency to put Rapid DNA to the test. The
first RapidHIT™ to be installed in a police
booking station is in place and is being
validated.
The ability for DNA Si: Labs to run the crime
scene samples, and Palm Bay P.D. to process
their own suspect/arrestee samples is a powerful
combination and should produce dramatic
results with the on-going use of DNA for
property crimes.
Results from this effort
will be published as
they become available.
Call to Action
These dramatic
benefits of Rapid DNA
call for increased
attention from local,
state and federal legislators. Even modest
funding, applied to the local level, could produce
similar dramatic results from communities
across the U.S. and globally. Please consider
supporting the expanded use of DNA for more
crimes and more types of crimes by contacting
your local, state and federal legislators to push
for financial and legislative support.
References
Roman, John; Reid, Shannon; Reid, Jay; Chalfin, Aaron; Adams, William; Knight, Carly. “The DNA Field
Experiment: Cost-Effectiveness Analysis of the Use of DNA in the Investigation of High-Volume Crimes.” April
2008. Urban Institute / Justice Policy Center.
Blackledge, John; Swiger, Roy; Muldoon, Douglas. “Intelligence-Led Policing Using DNA.” FBI National
Academy Associate, April 2012.
From personal interview with Chief Diane Urban, Hayward, CA Police Department and member of the
FBI/DoD/DHS Rapid DNA Task Force.