Notes

Meta-analysis involving QTLs associated with popping features within maize (Zea mays M.).
The adaptation to Spanish of the new recommendations helps their implementation and the creation of a uniform PCCM throughout the Spanish territory. All of this improves informed decision making and the success of PCCM.
The adaptation to Spanish of the new recommendations helps their implementation and the creation of a uniform PCCM throughout the Spanish territory. All of this improves informed decision making and the success of PCCM.Neonatal Screening Programs (PCN) have widely demonstrated their benefits since Dr. Guthrie published his developments on Phenylketonuria (PKU) in 1961. This paper describes how a simple and effective organization, which incorporates all the fundamental actors under the responsibility of the Public Health Directorate (DSP), has managed to ensure that the PCN of the Basque Country meets all the objectives required for a population screening. The acceptance by Basque society of the PCN allowed it to exceed 95% coverage in its second year of operation. Likewise, the limited negative social impact of PCN is evidenced by its low number of false positives and incorrect samples. Excellent response times allow every newborn with a positive result to have an early diagnosis and optimal initiation of treatment. There are two relevant experiences that support the importance of the effective exercise of the responsibility of the DSP. Congenital adrenal hyperplasia (CAH) was incorporated into the PCN in 1991 meeting all technical and clinical criteria. At the request of the experts, the DSP ordered in 1993 to cease this activity showing that it did not provide the expected benefits. The problems of organically integrating the PCN into the healthcare system were also experienced. The need to compete for resources put public health activities, including the PCN, at risk and led to their return to direct dependence on the DSP. The availability of this structure, in addition to facilitating the incorporation of other screenings, allows facing the future challenges.
The purpose of this paper was to describe the diagnosis, treatment and follow-up of patients diagnosed with congenital hypothyroidism (CH) by the Neonatal Screening Program in the Autonomous Community of Madrid during the state of alarm due to the COVID-19 health crisis.

The data were extracted from the retrospective analysis of patients diagnosed with CH and treated at the Clinical Diagnosis and Follow-up Center of CH located in the Pediatric Endocrinology Unit of the General University Hospital Gregorio Marañon.

During the period between March 14 and June 21, 2020, 7 neonates were diagnosed with congenital hypothyroidism. The Screening Center contacted the Clinical Diagnosis and Follow-up Center urgently, with the location and clinical assessment of the patient on the same day, performing the usual complementary examinations in all of them according to clinical pathway. The median age of diagnosis was 15.5 days (range 7.00-24.00). The subsequent clinical and analytical follow-up was carried out in all cases according to the recommended times. All patients presented normalization of the thyroid function after two weeks of treatment.

All patients seen at the Congenital Hypothyroidism Clinical Diagnosis and Follow-up Center during the alarm state period were diagnosed, treated and reevaluated following the usual clinical pathways without incidents. The current epidemiological situation of the COVID-19 pandemic has revealed the correct functioning of the circuit of the Congenital Hypothyroidism Screening Program in less favorable circumstances.
All patients seen at the Congenital Hypothyroidism Clinical Diagnosis and Follow-up Center during the alarm state period were diagnosed, treated and reevaluated following the usual clinical pathways without incidents. The current epidemiological situation of the COVID-19 pandemic has revealed the correct functioning of the circuit of the Congenital Hypothyroidism Screening Program in less favorable circumstances.
Newborn screening programmes (NBSP) have experienced a qualitative breakthrough due to the implementation of tandem mass spectrometry. However, the tests used give rise to false positives (FP) generating an excessive request for second samples with the consequent anxiety of the families. In order to avoid this problem several programmes have developed second-tier tests (2TT).

This article presents our experience in the implementation of 2TT in the NBSP of Catalonia, as well as in other international programmes.

From 2004 to the present, 2TT tests have been developed for more than 30 diseases. The use of 2TT helps to decrease the FP rate and increase the positive predictive value (PPV). In the NBSP of Catalonia, the implementation of 2TT for the detection of methylmalonic and propionic acidemias, homocystinurias, maple syrup disease and citrulinaemia, has managed to increase the PPV to 95% and decrease the PF rate to less than 0.01%. In cystic fibrosis, the application of 2TT slightly increases PPV but with a significant decrease in the request for second samples and in the number of cases referred to clinical units.

The introduction of 2TT in the NBSP allows to reduce considerably the FP, decreases the number of requested samples, as well as both anxiety and stress of the families, at the same time that the hospital costs are reduced and the PPV is increased, improving notably the efficiency of the NBSP.
The introduction of 2TT in the NBSP allows to reduce considerably the FP, decreases the number of requested samples, as well as both anxiety and stress of the families, at the same time that the hospital costs are reduced and the PPV is increased, improving notably the efficiency of the NBSP.Faced with the prospect of a collapsed health system due to the COVID-19 pandemic, the professionals involved in the Neonatal Screening Programme (NSP) of Catalonia had to adapt to this situation in a flexible, forceful and efficient manner. The most important goals were to prevent the risk of infection in the professionals, in families and their newborns, as well as to ensure the same effectiveness for the early detection of the diseases included in our programme. To this end, the laboratory was reorganised by dividing the staff into groups and the spaces were redistributed. It was also necessary to modify several protocols and circuits, especially for the management of early discharges from maternity centres, and for the collection of the necessary second samples (from newborns with inconclusive results or for low quality samples). In general, a 36% reduction in the time of arrival of these second samples at the laboratory was achieved with respect to the previous circuit. Zasocitinib chemical structure In the specific case of cystic fibrosis detection, the implementation of a new strategy meant a 100% reduction in the request for second samples and a 70% reduction in the age of diagnosis of the newborn.
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