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      History of Newborn Screening for Cystic Fibrosis—The Early Years

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          Abstract

          This review summarises the trajectory of neonatal screening strategies for the detection of cystic fibrosis (CF) using the measurement of Immunoreactive Trypsin (IRT) in dried blood spots (DBS) from 1979 until the beginning of the 21st century when newborn screening (NBS) programmes started to spread throughout many countries, using IRT measurement combined with a CF genotype analysis of DBS.

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          Most cited references22

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          Long-term study of one hundred five patients with cystic fibrosis; studies made over a five- to fourteen-year period.

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            Preliminary report on a mass screening program for neonatal hypothyroidism.

            We have recently developed an immunoassay that can measure thyroxine rapidly and accurately in the eluate of 40 mul of dried blood spotted on filter paper at the fifth day of life. The method is completely automated and by using the samples received by the Central Laboratory of the Quebec Network for Genetic Medicine and their follow-up facilities, we are now screening every newborn in the province of Quebec for neonatal hypothyroidism. To date, from 47,000 measurements, three newborn infants with abnormally low TBG and seven hypothyroid infants have been detected. From these data we conclude that the frequency of congenital hypothyroidism is about one in 7,000 births and that our method is effective in detecting thyroid hormone abnormalities with an acceptable percentage of false positive measurements; no false negative results have occurred to our knowledge.
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              DRIED-BLOOD SPOT SCREENING FOR CYSTIC FIBROSIS IN THE NEWBORN

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                Author and article information

                Journal
                Int J Neonatal Screen
                Int J Neonatal Screen
                IJNS
                International Journal of Neonatal Screening
                MDPI
                2409-515X
                31 January 2020
                March 2020
                : 6
                : 1
                : 8
                Affiliations
                [1 ]University of Caen Normandy (UNICAEN), 14032 Caen, France
                [2 ]Caen University Hospital, 14040 Caen, France
                [3 ]East Anglian Biochemical Genetic Unit, Peterborough, UK
                Author notes
                Article
                IJNS-06-00008
                10.3390/ijns6010008
                7422985
                dd9a87cc-54ce-4373-87e6-71d55cb9711b
                © 2020 by the authors.

                Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license ( http://creativecommons.org/licenses/by/4.0/).

                History
                : 20 December 2019
                : 28 January 2020
                Categories
                Review

                newborn screening,immunoreactive trypsin(ogen),dried blood spot,radioimmunoassay,dna

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