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Special Article |
From the Diagnostic Genetic Sciences Program, School of Allied Health, University of Connecticut, Storrs, Connecticut
| Abstract |
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| Introduction |
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As increasingnumbers of molecular tests have become available, demand for technologists with skills in this expanding discipline has followed. Most of the technologists currently performing these tests have been trained on the job, which is both expensive and time-consuming.
In the early 1990s, laboratory science programs began incorporating some molecular lectures or courses into their curriculum; however, formal molecular diagnostics programs were lacking. A task force was created in January 2000 by the National Accrediting Agency for Clinical Laboratory Sciences to study the existing programs with molecular science components to determine essential elements for an accredited program. The task force compiled a list of laboratory science programs with varying degrees of emphasis on molecular science. Of 17 programs in the United States, two in addition to the University of Connecticuts appear to have a sufficient practicum component to qualify students to sit for the credentialing examination. Three laboratory science programs have expanded their curricula to include molecular diagnostics as a separate major or track, but they do not offer 6-month laboratory practica. Australia has two programs with emphasis in molecular methods,3 and two cytogenetics programs in Canada recently changed their curricula to include substantial coursework in molecular diagnostics, including a practicum of less than 6 months.4
| The University of Connecticut Program |
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To be sure that needs of potential employers were met, a questionnaire was sent in 1994 to 50 laboratories in the Northeast that performed molecular tests. The survey listed topics and skills in molecular diagnostics and asked recipients to indicate whether or not an entry level technologist should know each of them. The topics and skills most frequently identified as important included in situ hybridization, polymerase chain reaction (PCR), reverse transcriptase PCR, restriction fragment length polymorphism, DNA isolation, Southern blot, Northern blot, B and T lymphocyte gene rearrangement analysis, Fragile X detection, infectious disease hybridization assays, recombinant DNA procedures, and sister chromatid exchange assay. The range of testing offered by the laboratories varied tremendously. Some performed exclusively forensic science, others exclusively cancer research; some did primarily infectious disease testing, others genetic pre- and/or post-natal testing. Some content areas were identified as common to most of the laboratories, however. The on-campus didactic and laboratory courses and the required practicum developed by the DGS faculty were designed to meet these more general needs. Other, more specific content was performed by a minority of laboratories. The elective practicum courses were designed to meet these more particular needs and to allow students to pursue specific areas of interest.
Laboratory space and equipment to perform molecular testing was obtained via funding from Victoria C. and Henry W. Nozko, Sr. and a Yankee Ingenuity Initiative/Elias Howe Grant funded by the State of Connecticut (Strasbaugh L, Williams GS: Establishment of a DNA identification diagnosis training facility. Grant 95H034, Connecticut Innovations, Inc., 1995). These funds provided for the construction of two student laboratories in the School of Allied Health: a PCR laboratory and a chromosome imaging laboratory that includes a darkroom and space for fluorescence in situ hybridization (FISH). The grant provided equipment and supplies for two new student laboratory courses in molecular genetics: an introductory human genetics laboratory course offered by the Department of Molecular and Cell Biology and an advanced laboratory course in molecular diagnostics offered by the Diagnostic Genetic Sciences Program in the School of Allied Health.
The Faculty
The Diagnostic Genetic Sciences Program faculty
consists of three individuals: the Program Director, who is certified
in cytogenetics Clinical Laboratory Specialist in Cytogenetics (CLSpCG)
and cytology (CT American Society of Clinical Pathology (ASCP)),
a half-time faculty member certified in medical technology (MT(ASCP))
and specialty in blood bank (SBB(ASCP)), and a full-time faculty member
certified in cytogenetics (CLSpCG) and molecular biology (CLSpMB).
Faculty are prepared at the masters or doctorate level.
Admission Requirements
Applicants to the Molecular Diagnostic Sciences (MDS) certificate
program must have earned a baccalaureate degree in biology,
cytogenetics, medical technology/clinical laboratory science, or a
related area with prerequisite coursework in microbiology,
biochemistry, and statistics.
Curriculum
The curriculum consists of various courses currently available in
the School of Allied Health or elsewhere at the University of
Connecticut, plus newly developed courses in molecular diagnostics.
Table 1
shows the typical plan of study for the MDS Certificate Program. The
former includes Allied Health core courses, required of all students in
the School of Allied Health (Research for the Health Professional,
Health Care Issues for the Health Professional, and Management for the
Health Professional). Specific core medical laboratory sciences courses
are required of all students in the laboratory disciplines offered at
University of Connecticut (Basic Laboratory Techniques for the Medical
Laboratory Sciences and Immunology for the Medical Laboratory
Sciences). Also required are courses in Human Genetics and Cell
Biology, both offered by the Department of Molecular and Cell Biology.
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The following procedures are completed in the on-campus student laboratory: DNA extraction using organic solvents, salt precipitation, and chelation methods; mononuclear cell enrichment by density gradient centrifugation; FISH with three types of probes; B and T lymphocyte gene rearrangement by Southern analysis; PCR for D1S80; and restriction fragment length polymorphism (RFLP) analysis of mock crime scene evidence.
The required practicum courses are Amplification Methods, Blotting Methods, and Research in Molecular Genetics. All students are encouraged to submit their research for the Association of Genetic Technologists (AGT) Annual Student Research Award Competition. In 1999, a Molecular Diagnostic Sciences student from the University of Connecticut became the first molecular student to win that competition with a paper titled "Detecting Aneuploidy: Comparison of Primed in situ Labeling (PRINS), Fluorescence in situ Hybridization (FISH) and Chromosome Analysis."
All MDS students must also take one elective course while on practicum. Current electives courses include In Situ Hybridization Methods, Mutagenesis, Microbiology Applications of Molecular Diagnostics, DNA Sequencing, and Topics in Molecular Genetics.
To meet these curricular requirements, students typically complete two semesters on campus followed by a 6-month practicum in one or more molecular laboratories, gaining extensive hands-on experience. The program matriculates students twice a year, in September and January. Upon completion of the program, students are qualified to take the National Credentialing Agency (NCA) certification examination in Molecular Biology. The NCA examination has been taken by 13 of the 16 eligible graduates and 12 (92%) of University of Connecticut graduates have passed on the first try; the national pass rate is 72%.5, 6, 7
The Student Population
Students enter the MDS certificate program after having earned a
baccalaureate degree in a laboratory science, biology, or a related
subject area. Though it had been expected that most students would be
biology majors with limited job opportunities, this proved not to be
the case. Eighteen of the 27 total students enrolled in the program
since its inception were graduates of the undergraduate or certificate
programs in Diagnostic Genetic Sciences at the University of
Connecticut. Although the DGS curriculum emphasizes classical
cytogenetics, it also includes all of the required on-campus coursework
of the MDS curriculum. Therefore, DGS students are able to complete the
MDS program by completing the 6-month practicum in molecular
diagnostics. These students can become dual-certified in cytogenetics
and molecular biology, increasing their job flexiblity. Two additional
students have degrees in Medical Technology, and one is a medical
laboratory technician who was also graduated from the DGS undergraduate
program. These students are able to become dual- or even
triple-certified.
The first student matriculated into the MDS certificate program at the University of Connecticut in the Fall of 1995. Since then, 22 additional students have completed the program. The class size has increased from one in the first class to five in the class that matriculated in the Fall of 1999. Class size was initially limited to four students each semester, based on the availability of affiliation sites. With the addition of new practicum sites, the class capacity is now eight per semester. The number of affiliated practicum sites remains a limiting factor for enrollment.
The Practicum Sites
Practicum sites are all in the United States; most are in the
Northeast (one in Colorado, five in Connecticut, and two each in
Massachusetts, Montana, New York, Ohio, Pennsylvania, and Virginia).
Each site conducts a different battery of tests with emphasis on
different disciplines. Affiliated laboratory sites must perform at
least Southern blot analysis and standard PCR, and must be prepared to
offer the student a hands-on research project, in order to be a
full-service practicum site. Two sites currently offer elective courses
only.
New Directions
This academic year the DGS faculty, with the assistance of its
advisory board, will be developing an undergraduate individualized
major with a plan of study in molecular diagnostics. Students choosing
this major will graduate from the University of Connecticut with a
Bachelor of Science degree with an Individualized Major in Molecular
Diagnostics. The upper division plan of study will include all courses
required for the MDS certificate program, with additional courses from
the DGS program and Molecular and Cell Biology Department or other
units on campus. Graduates will be eligible to take the NCA examination
in Molecular Biology immediately upon graduation.
| Conclusion |
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| Footnotes |
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Funded in part by the Yankee Ingenuity Initiative/Elias Howe Grant through Connecticut Innovations, Inc.
Accepted for publication September 6, 2000.
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