BACKGROUND & AIMS: Homozygous Pi∗Z mutation in alpha-1 antitrypsin (Pi∗ZZ genotype) predisposes to pulmonary loss-of-function and hepatic gain-of-function injury. To facilitate selection into clinical trials typically targeting only 1 organ, we systematically evaluated an international, multicenter, longitudinal, Pi∗ZZ cohort to uncover natural disease course and surrogates for future liver- and lung-related endpoints. METHODS: Cohort 1 recruited 737 Pi∗ZZ individuals from 25 different centers without known liver comorbidities who received a baseline clinical and laboratory assessment as well as liver stiffness measurement (LSM). A follow-up interview was performed after at least 6 months. Cohort 2 consisted of 135 Pi∗ZZ subjects without significant liver fibrosis, who received a standardized baseline and follow-up examination at least 2 years later, both including LSM. RESULTS: During 2634 patient-years of follow-up, 39 individuals died, with liver and lung being responsible for 46% and 36% of deaths, respectively. Forty-one Pi∗ZZ subjects who developed a hepatic endpoint presented with significantly higher baseline liver fibrosis surrogates, that is, LSM (24 vs 5 kPa, P < .001) and aspartate aminotransferase-to-platelet ratio index (1.1 vs 0.3 units, P < .001). Liver-related endpoints within 5 years were most accurately predicted by LSM (area under the curve 0.95) followed by aspartate aminotransferase-to-platelet ratio index (0.92). Baseline lung parameters displayed only a moderate predictive utility for lung-related endpoints within 5 years (forced expiratory volume in the first second area under the curve 0.76). Fibrosis progression in those with no/mild fibrosis at baseline was rare and primarily seen in those with preexisting risk factors. CONCLUSIONS: Noninvasive liver fibrosis surrogates accurately stratify liver-related risks in Pi∗ZZ individuals. Our findings have direct implications for routine care and future clinical trials of Pi∗ZZ patients.

• MeSH
• alfa-1-antitrypsin * genetika   krev   MeSH
• biologické markery krev   MeSH
• časové faktory MeSH
• deficit alfa1-antitrypsinu * genetika   diagnóza   komplikace   MeSH
• dospělí MeSH
• elastografie MeSH
• genotyp MeSH
• homozygot MeSH
• jaterní cirhóza * genetika   diagnóza   MeSH
• lidé středního věku MeSH
• lidé MeSH
• longitudinální studie MeSH
• mutace MeSH
• plíce patofyziologie   patologie   diagnostické zobrazování   MeSH
• plicní nemoci genetika   etiologie   diagnóza   MeSH
• progrese nemoci * MeSH
• rizikové faktory MeSH
• stupeň závažnosti nemoci MeSH
• Check Tag
• dospělí MeSH
• lidé středního věku MeSH
• lidé MeSH
• mužské pohlaví MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• multicentrická studie MeSH

BACKGROUND AND AIMS: Alpha-1 antitrypsin deficiency is an inherited disorder caused by alpha-1 antitrypsin (AAT) mutations. We analysed the association between alcohol intake and liver-related parameters in individuals with the heterozygous/homozygous Pi*Z AAT variant (Pi*MZ/Pi*ZZ genotype) found in the United Kingdom Biobank and the European Alpha1 liver consortium. METHODS: Reported alcohol consumption was evaluated in two cohorts: (i) the community-based United Kingdom Biobank (17 145 Pi*MZ, 141 Pi*ZZ subjects, and 425 002 non-carriers [Pi*MM]); and (ii) the European Alpha1 liver consortium (561 Pi*ZZ individuals). Cohort (ii) included measurements of carbohydrate-deficient transferrin (CDT). RESULTS: In both cohorts, no/low alcohol intake was reported by >80% of individuals, while harmful consumption was rare (~1%). Among Pi*MM and Pi*MZ individuals from cohort (i), moderate alcohol consumption resulted in a <30% increased rate of elevated transaminases and ~50% increase in elevated gamma-glutamyl transferase values, while harmful alcohol intake led to an at least twofold increase in the abnormal levels. In Pi*ZZ individuals from both cohorts, moderate alcohol consumption had no marked impact on serum transaminase levels. Among Pi*ZZ subjects from cohort (ii) who reported no/low alcohol consumption, those with increased CDT levels more often had signs of advanced liver disease. CONCLUSIONS: Pi*MZ/Pi*ZZ genotype does not seem to markedly aggravate the hepatic toxicity of moderate alcohol consumption. CDT values might be helpful to detect alcohol consumption in those with advanced fibrosis. More data are needed to evaluate the impact of harmful alcohol consumption.

• MeSH
• alfa-1-antitrypsin * genetika   krev   MeSH
• deficit alfa1-antitrypsinu * genetika   krev   diagnóza   komplikace   MeSH
• dospělí MeSH
• fenotyp * MeSH
• gama-glutamyltransferasa krev   MeSH
• genotyp MeSH
• játra patologie   MeSH
• kohortové studie MeSH
• lidé středního věku MeSH
• lidé MeSH
• pití alkoholu * škodlivé účinky   MeSH
• senioři MeSH
• transferin * analýza   metabolismus   analogy a deriváty   MeSH
• Check Tag
• dospělí MeSH
• lidé středního věku MeSH
• lidé MeSH
• mužské pohlaví MeSH
• senioři MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• Geografické názvy
• Evropa MeSH
• Spojené království MeSH

BACKGROUND: The PI*S variant is one of the most prevalent mutations within alpha-1 antitrypsin deficiency (AATD). The risk of developing AATD-related lung disease in individuals with the PI*SS genotype is poorly defined despite its substantial prevalence. Our study aimed to characterize this genotype and its risk for lung disease and compare it with the PI*ZZ and PI*SZ genotypes using data from the European Alpha-1 antitrypsin Deficiency Research Collaboration international registry. METHOD: Demographic, clinical, functional, and quality of life (QoL) parameters were assessed to compare the PI*SS characteristics with the PI*SZ and PI*ZZ controls. A propensity score with 1:3 nearest-neighbour matching was performed for the most important confounding variables. RESULTS: The study included 1007 individuals, with PI*SS (n = 56; 5.6%), PI*ZZ (n = 578; 57.4%) and PI*SZ (n = 373; 37.0%). The PI*SS population consisted of 58.9% men, with a mean age of 59.2 years and a mean FEV1(% predicted) of 83.4%. Compared to PI*ZZ individuals they had less frequent lung disease (71.4% vs. 82.2%, p = 0.037), COPD (41.4% vs. 60%, p = 0.002), and emphysema (23.2% vs. 51.9%, p < 0.001) and better preserved lung function, fewer exacerbations, lower level of dyspnoea, and better QoL. In contrast, no significant differences were found in the prevalence of lung diseases between PI*SS and PI*SZ, or lung function parameters, exacerbations, dyspnoea, or QoL. CONCLUSIONS: We found that, as expected, the risk of lung disease associated with the PI*SS genotype is significantly lower compared with PI*ZZ, but does not differ from that observed in PI*SZ individuals, despite having higher serum AAT levels. TRIAL REGISTRATION: www. CLINICALTRIALS: gov (ID: NCT04180319).

• MeSH
• alfa-1-antitrypsin * genetika   MeSH
• deficit alfa1-antitrypsinu * genetika   epidemiologie   diagnóza   MeSH
• genotyp * MeSH
• kvalita života MeSH
• lidé středního věku MeSH
• lidé MeSH
• plicní nemoci genetika   epidemiologie   diagnóza   MeSH
• registrace MeSH
• rizikové faktory MeSH
• senioři MeSH
• Check Tag
• lidé středního věku MeSH
• lidé MeSH
• mužské pohlaví MeSH
• senioři MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• multicentrická studie MeSH

Deficit alfa-1-antitrypsinu (AATD) je jedním z nejčastějších genetických onemocnění. Většina osob nese dvě kopie divoké alely M genu SERPINA1, který kóduje alfa-1-antitrypsin (AAT), a má normální AAT v krvi. Devadesát pět procent případů těžkého deficitu AAT je důsledkem homozygotní záměny Glu342Lys (alela Z), která je přítomna u 1 z 25 osob evropského původu. Mírný nedostatek AAT je obvykle důsledkem mutace Glu264Val (alela S). AAT je syntetizován v játrech a vylučován do krve, kde je jeho hlavní úlohou chránit plicní tkáň před působením neutrofilní elastázy. Bodové mutace mohou vést k precipitaci AAT v játrech, což vede k jaterní fibróze a cirhóze vlivem proteotoxického stresu („gain of function“). Naopak nedostatek cirkulujícího AAT predisponuje homozygoty s těžkým deficitem k časnému vzniku plicního emfyzému („loss of function“). Článek podává přehled současných poznatků o patofyziologii deficitu AAT, možnostech jeho diagnostiky a diskutuje možnosti léčby plicního onemocnění i nové možnosti léčby jaterního onemocnění.

Alpha-1-antitrypsin (AAT) deficiency (AATD) is one of the most common genetic disorders. Most people carry two copies of the wild-type M allele of the SERPINA1 gene, which encodes AAT, and have normal blood concentrations of AAT. Ninety-five percent of cases of severe AAT deficiency result from the homozygous Glu342Lys substitution (Z allele), which is present in 1 in 25 persons of European descent. Mild AAT deficiency is usually due to the Glu264Val mutation (S allele). AAT is synthesized in the liver and secreted into the blood. Its primary role is to protect lung tissue from neutrophil elastase attack. Point mutations can lead to the retention of AAT in the liver, leading to liver fibrosis and cirrhosis due to proteotoxic stress ("gain of function"), whereas the lack of circulating AAT predisposes homozygotes with severe deficiency to early onset of pulmonary emphysema ("loss of function"). This article reviews current knowledge of the pathophysiology of AAT deficiency, and its diagnostic options and discusses treatment options for pulmonary and novel treatment strategies in liver disease.

• MeSH
• alfa-1-antitrypsin krev   MeSH
• deficit alfa1-antitrypsinu * diagnóza   farmakoterapie   genetika   komplikace   MeSH
• jaterní cirhóza diagnóza   etiologie   terapie   MeSH
• lidé MeSH
• plicní emfyzém diagnóza   etiologie   terapie   MeSH
• Check Tag
• lidé MeSH

• MeSH
• alfa-1-antitrypsin genetika   MeSH
• deficit alfa1-antitrypsinu * diagnóza   epidemiologie   genetika   MeSH
• fenotyp MeSH
• lidé MeSH
• registrace MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• dopisy MeSH
• práce podpořená grantem MeSH

BACKGROUND: Alpha-1 antitrypsin deficiency (AATD) is a rare disease that is associated with an increased risk of pulmonary emphysema. The European AATD Research Collaboration (EARCO) international registry was founded with the objective of characterising the individuals with AATD and investigating their natural history. METHODS: The EARCO registry is an international, observational and prospective study of individuals with AATD, defined as AAT serum levels < 11 μM and/or proteinase inhibitor genotypes PI*ZZ, PI*SZ and compound heterozygotes or homozygotes of other rare deficient variants. We describe the characteristics of the individuals included from February 2020 to May 2022. RESULTS: A total of 1044 individuals from 15 countries were analysed. The most frequent genotype was PI*ZZ (60.2%), followed by PI*SZ (29.2%). Among PI*ZZ patients, emphysema was the most frequent lung disease (57.2%) followed by COPD (57.2%) and bronchiectasis (22%). Up to 76.4% had concordant values of FEV1(%) and KCO(%). Those with impairment in FEV1(%) alone had more frequently bronchiectasis and asthma and those with impairment in KCO(%) alone had more frequent emphysema and liver disease. Multivariate analysis showed that advanced age, male sex, exacerbations, increased blood platelets and neutrophils, augmentation and lower AAT serum levels were associated with worse FEV1(%). CONCLUSIONS: EARCO has recruited > 1000 individuals with AATD from 15 countries in its first 2 years. Baseline cross sectional data provide relevant information about the clinical phenotypes of the disease, the patterns of functional impairment and factors associated with poor lung function. Trial registration www. CLINICALTRIALS: gov (ID: NCT04180319).

• MeSH
• alfa-1-antitrypsin genetika   MeSH
• bronchiektazie * diagnóza   epidemiologie   MeSH
• chronická obstrukční plicní nemoc * genetika   MeSH
• deficit alfa1-antitrypsinu * diagnóza   epidemiologie   genetika   MeSH
• genotyp MeSH
• lidé MeSH
• plicní emfyzém * diagnóza   epidemiologie   komplikace   MeSH
• prospektivní studie MeSH
• průřezové studie MeSH
• registrace MeSH
• Check Tag
• lidé MeSH
• mužské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• pozorovací studie MeSH

• Klíčová slova
• augmentační terapie,
• MeSH
• alfa-1-antitrypsin analýza   genetika   MeSH
• chronická obstrukční plicní nemoc etiologie   terapie   MeSH
• deficit alfa1-antitrypsinu * genetika   patologie   MeSH
• enzymová substituční terapie * MeSH
• klinická studie jako téma MeSH
• kouření škodlivé účinky   MeSH
• lidé MeSH
• počítačová rentgenová tomografie MeSH
• výběr pacientů MeSH
• Check Tag
• lidé MeSH

Heterozygotes for Z or S alleles of alpha-1-antrypsin (AAT) have low serum AAT levels. Our aim was to compare the risk of hepatocellular carcinoma (HCC) in patients with liver cirrhosis carrying the SERPINA1 MM, MZ and MS genotypes. The study groups consisted of 1119 patients with liver cirrhosis of various aetiologies, and 3240 healthy individuals served as population controls. The MZ genotype was significantly more frequent in the study group (55/1119 vs. 87/3240, p < 0.0001). The MS genotype frequency was comparable in controls (32/119 vs. 101/3240, p = 0.84). MZ and MS heterozygotes had lower serum AAT level than MM homozygotes (medians: 0.90 g/L; 1.40 g/L and 1.67 g/L; p < 0.001 for both). There were significantly fewer patients with HCC in the cirrhosis group among MZ and MS heterozygotes than in MM homozygotes (5/55 and 1/32 respectively, vs. 243/1022, p < 0.01 for both). The risk of HCC was lower in MZ and MS heterozygotes than in MM homozygotes (OR 0.3202; 95% CI 0.1361-0.7719 and OR 0.1522; 95% CI 0.02941-0.7882, respectively). Multivariate analysis of HCC risk factors identified MZ or MS genotype carriage as a protective factor, whereas age, male sex, BMI and viral aetiology of cirrhosis increased HCC risk.

• MeSH
• alely MeSH
• alfa-1-antitrypsin krev   genetika   MeSH
• frekvence genu MeSH
• genotyp MeSH
• hepatocelulární karcinom komplikace   genetika   MeSH
• index tělesné hmotnosti MeSH
• jaterní cirhóza komplikace   genetika   MeSH
• lidé středního věku MeSH
• lidé MeSH
• multivariační analýza MeSH
• nádory jater komplikace   genetika   MeSH
• rizikové faktory MeSH
• sexuální faktory MeSH
• Check Tag
• lidé středního věku MeSH
• lidé MeSH
• mužské pohlaví MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH

• MeSH
• alfa-1-antitrypsin aplikace a dávkování   terapeutické užití   MeSH
• chronická obstrukční plicní nemoc etiologie   MeSH
• deficit alfa1-antitrypsinu * patologie   terapie   MeSH
• lidé MeSH
• Check Tag
• lidé MeSH

• Klíčová slova
• RAPID, augmentační léčba,
• MeSH
• alfa-1-antitrypsin * aplikace a dávkování   krev   terapeutické užití   MeSH
• deficit alfa1-antitrypsinu * diagnóza   farmakoterapie   MeSH
• desmosin krev   MeSH
• intravenózní podání MeSH
• isodesmosin krev   MeSH
• lidé MeSH
• management nemoci MeSH
• multicentrické studie jako téma MeSH
• parenchymatická tkáň účinky léků   MeSH
• randomizované kontrolované studie jako téma MeSH
• registrace MeSH
• Check Tag
• lidé MeSH