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Browsing by Author "Murray, Karen F."

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    Association Between Transient Elastography and Controlled Attenuated Parameter and Liver Ultrasound in Children With Cystic Fibrosis
    (Wolters Kluwer, 2021-05-13) Ye, Wen; Leung, Daniel H.; Molleston, Jean P.; Ling, Simon C.; Murray, Karen F.; Nicholas, Jennifer L.; Huang, Suiyuan; Karmazyn, Boaz W.; Harned, Roger K.; Masand, Prakash; Alazraki, Adina L.; Navarro, Oscar M.; Otto, Randolph K.; Palermo, Joseph J.; Towbin, Alexander J.; Alonso, Estella M.; Karnsakul, Wikrom W.; Schwarzenberg, Sarah Jane; Seidel, Glenn F.; Siegel, Marilyn; Magee, John C.; Narkewicz, Michael R.; Freeman, A. Jay; Pediatrics, School of Medicine
    Methods to identify children with cystic fibrosis (CF) at risk for development of advanced liver disease are lacking. We aim to determine the association between liver stiffness measurement (LSM) by vibration-controlled transient elastography (VCTE) with research ultrasound (US) patterns and conventional hepatic markers as a potential means to follow liver disease progression in children with CF. ELASTIC (Longitudinal Assessment of Transient Elastography in CF) is a nested cohort of 141 patients, ages 7-21, enrolled in the Prediction by US of Risk of Hepatic Cirrhosis in CF (PUSH) Study. We studied the association between LSM with research-grade US patterns (normal [NL], heterogeneous [HTG], homogeneous [HMG], or nodular [NOD]) and conventional hepatic markers. In a subgroup (n = 79), the association between controlled attenuation parameter (CAP) and US pattern was explored. Among 133 subjects undergoing VCTE, NOD participants (n = 26) had a significantly higher median (interquartile range) LSM of 9.1 kPa (6.3, 15.8) versus NL (n = 72, 5.1 kPa [4.2, 7.0]; P < 0.0001), HMG (n = 17, 5.9 kPa [5.2, 7.8]; P = 0.0013), and HTG (n = 18, 6.1 kPa [4.7, 7.0]; P = 0.0008) participants. HMG participants (n = 14) had a significantly higher mean CAP (SD) (270.5 dB/m [61.1]) compared with NL (n = 40, 218.8 dB/m [46.5]; P = 0.0027), HTG (n = 10, 218.1 dB/m [60.7]; P = 0.044), and NOD (n = 15, 222.7 dB/m [56.4]; P = 0.041) participants. LSM had a negative correlation with platelet count (rs = − 0.28, P = 0.0071) and positive correlation with aspartate aminotransferase-to-platelet ratio index (rs = 0.38, P = 0.0002), Fibrosis-4 index (rs = 0.36, P = 0.0007), gamma-glutamyltransferase (GGT; rs = 0.35, P = 0.0017), GGT-to-platelet ratio (rs = 0.35, P = 0.003), and US spleen size z-score (rs = 0.27, P = 0.0073). Conclusion: VCTE is associated with US patterns and conventional markers in patients with liver disease with CF.
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    Autoantibodies and autoimmune disease during treatment of children with chronic hepatitis C
    (Wiley, 2013) Molleston, Jean P.; Mellman, William; Narkewicz, Michael R.; Balistreri, William F.; Gonzalez-Peralta, Regino P.; Jonas, Maureen M.; Lobritto, Steven J.; Mohan, Parvathi; Murray, Karen F.; Njoku, Dolores; Rosenthal, Philip; Barton, Bruce A.; Talor, Monica V.; Cheng, Irene; Schwarz, Kathleen B.; Haber, Barbara A.; Peds-C Clinical Research Net; Pediatrics, School of Medicine
    Objectives: Autoantibodies were studied in a well-characterized cohort of children with chronic hepatitis C during treatment with pegylated interferon and ribavirin to assess the relation with treatment and development of autoimmune disease. Methods: : A total of 114 children (5-17 years), screened for the presence of high-titer autoantibodies, were randomized to pegylated interferon with or without ribavirin. Anti-nuclear, anti-liver-kidney-microsomal, anti-thyroglobulin, anti-thyroid peroxidase, insulin, anti-glutamic acid decarboxylase (GAD) antibodies were measured after trial completion using frozen sera. Results: At baseline, 19% had autoantibodies: anti-nuclear antibodies (8%), anti-liver-kidney-microsomal antibodies (4%), and glutamic acid decarboxylase antibodies (4%). At 24 and 72 weeks (24 weeks after treatment completion), 23% and 26% had autoantibodies (P=0.50, 0.48 compared with baseline). One child developed diabetes and 2 hypothyroidism during treatment; none developed autoimmune hepatitis. At 24 weeks, the incidence of flu-like symptoms, gastrointestinal symptoms, and headaches was 42%, 8% and 19% in those with autoantibodies versus 52%, 17%, and 26% in those without (P=0.18, 0.36, and 0.20, respectively). In children with negative hepatitis C virus polymerase chain reaction at 24 weeks, there was no difference in the rate of early virologic response/sustained virologic response, respectively, in those with autoantibodies 76%/69% vs 58%/65% in those without (P=0.48). Conclusions: Despite screening, we found autoantibodies commonly at baseline, during treatment for chronic hepatitis C and after. The presence of antibodies did not correlate with viral response, adverse effects, or autoimmune hepatitis. Neither screening nor archived samples assayed for thyroid and diabetes-related antibodies identified the 3 subjects who developed overt autoimmune disease, diabetes (1), and hypothyroidism (2).
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    Baseline ultrasound and clinical correlates in children with cystic fibrosis.
    (Elsevier, 2015-10) Leung, Daniel H.; Ye, Wen; Molleston, Jean P.; Weymann, Alexander; Ling, Simon; Paranjape, Shruti M.; Romero, Rene; Schwarzenberg, Sara Jane; Palermo, Joseph; Alonso, Estella M.; Murray, Karen F.; Marshall, Bruce C.; Sherker, Averell H.; Siegel, Marilyn J.; Krishnamurthy, Rajesh; Harned, Roger; Karmazyn, Boaz; Magee, John C.; Narkewicz, Michael R.; Department of Pediatrics, IU School of Medicine
    Objective: To investigate the relationship between abdominal ultrasound (US) findings and demographic, historical and clinical features in children with CF. Study design: Children age 3-12 years with CF without known cirrhosis, were enrolled in a prospective, multi-center study of US to predict hepatic fibrosis. Consensus US patterns were assigned by 3 radiologists as normal, heterogeneous, homogeneous, or cirrhosis. Data were derived from direct collection and U.S. or Toronto CF registries. Chi-square or ANOVA were used to compare variables among US groups and between normal and abnormal. Logistic regression was used to study risk factors for having abnormal US. Results: Findings in 719 subjects were normal (n=590, 82.1%), heterogeneous (64, 8.9%), homogeneous (41, 5.7%), and cirrhosis (24, 3.3%). Cirrhosis (p=0.0004), homogeneous (p<0.0001) and heterogeneous (p=0.03) were older than normal. More males were heterogeneous (p=0.001). More heterogeneous (15.0%, p=0.009) and cirrhosis (25.0%, p=0.005) had
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    Durability of Response in Children Treated with Pegylated Interferon alfa-2a +/- Ribavirin for Chronic Hepatitis C
    (Lippincott Williams & Wilkins, 2016-01) Schwarz, Kathleen B.; Molleston, Jean P.; Jonas, Maureen M.; Wen, Jessica; Murray, Karen F.; Rosenthal, Philip; Gonzalez-Peralta, Regino P.; Lobritto, Steven J.; Mogul, Douglas; Pavlovic, Vedran; Warne, Charles; Wat, Cynthia; Thompson, Bruce; Department of Pediatrics, IU School of Medicine
    Objectives: No long-term data have been published on the durability of response following pegylated interferon (PegIFN) treatment in children with chronic hepatitis C. This prospective, multicenter, long-term follow-up (LTFU) study aimed to assess long-term durability of sustained virological response (SVR), long-term safety and tolerability, and the association between IL28B genotype and treatment response, in children previously treated with PegIFN alfa-2a ± ribavirin (RBV) in the PEDS-C trial. Methods: A total of 93 patients were assessed for enrollment, and 38 enrolled in the study. Patients attended 2 study visits: 5 (mean 5.6, range 4.1–6.6) and 6 (6.6, 5.1–7.7) years after treatment cessation. Standardized medical history, physical examination, and laboratory testing were performed at these visits. Reminder telephone calls were conducted at 4 and 8 months after the initial visit. Results: The LTFU cohort was the representative of the original PEDS-C cohort because both baseline and treatment characteristics were comparable. Of the 38 participants, 21 achieved SVR (responders) during the PEDS-C trial and 17 had not (nonresponders). All 21 responders maintained undetectable hepatitis C virus RNA during the LTFU (4.4–7.0 years after achieving SVR) in contrast to the nonresponders who demonstrated persistent viremia. IL28B CC genotype was associated with SVR (67% vs 30% in non-CC, P = 0.028). Conclusion: Long-term durability of SVR is excellent following PegIFN alfa-2a treatment in children with chronic hepatitis C; SVR is higher in those with IL28B CC versus non-CC.
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    Extrahepatic anomalies in infants with biliary atresia: results of a large prospective North American multicenter study
    (Wiley, 2013-11) Schwarz, Kathleen B.; Haber, Barbara H.; Rosenthal, Philip; Mack, Cara L; Moore, Jeffrey; Bove, Kevin E.; Bezerra, Jorge A.; Karpen, Saul J.; Kerkar, Nanda; Shneider, Benjamin L.; Turmelle, Yumirle P.; Whitington, Peter F.; Molleston, Jean P.; Murray, Karen F.; Ng, Vicky L.; Romero, René; Wang, Kasper S.; Sokol, Ronald J.; Magee, John C.; Pediatrics, School of Medicine
    Background and aims The etiology of biliary atresia (BA) is unknown. Given that patterns of anomalies might provide etiopathogenetic clues, we utilized data from the North American Childhood Liver Disease Research and Education Network to analyze patterns of anomalies in infants with BA. Methods Two hundred eighty-nine infants who were enrolled into the prospective database prior to surgery at any of 15 centers participating were evaluated. Results Group 1 was non-syndromic, isolated BA (without major malformations) (n = 242, 84 %), Group 2 was BA and at least one malformation considered major as defined by the National Birth Defects Prevention Study but without laterality defects (n = 17, 6%). Group 3 was syndromic, with laterality defects (n = 30, 10%). In the population as a whole, anomalies (either major or minor) were most prevalent in the cardiovascular (16%) and gastrointestinal (14%) systems. Group 3 patients accounted for the majority of subjects with cardiac, gastrointestinal and splenic anomalies. Group 2 subjects also frequently displayed cardiovascular (71%) and gastrointestinal (24 %) anomalies; interestingly this group had genitourinary anomalies more frequently (47%) compared to Group 3 subjects (10%). Conclusions This study identified a group of BA (Group 2) that differed from the classical syndromic and non-syndromic groups and that was defined by multiple malformations without laterality defects. Careful phenotyping of the patterns of anomalies may be critical to the interpretation of both genetic and environmental risk factors associated with BA, allowing new insight into pathogenesis and/or outcome.
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    Health-related Quality of Life in a Prospective Study of Ultrasound to Detect Cystic Fibrosis-related Liver Disease in Children
    (Wiley, 2022) Schwarzenberg, Sarah Jane; Palermo, Joseph J.; Ye, Wen; Huang, Suiyuan; Magee, John C.; Alazraki, Adina; Freeman, A. Jay; Harned, Roger; Karmazyn, Boaz; Karnsakul, Wikrom; Leung, Daniel H.; Ling, Simon C.; Masand, Prakash; Molleston, Jean P.; Murray, Karen F.; Navarro, Oscar M.; Nicholas, Jennifer L.; Otto, Randolph K.; Paranjape, Shruti M.; Siegel, Marilyn J.; Stoll, Janis; Towbin, Alexander J.; Narkewicz, Michael R.; Alonso, Estella M.; CFLD NET; Pediatrics, School of Medicine
    Objectives: Cystic fibrosis liver disease (CFLD) begins early in life. Symptoms may be vague, mild, or nonexistent. Progressive liver injury may be associated with decrements in patient health before liver disease is clinically apparent. We examined Health-Related Quality of Life (HRQOL) in children enrolled in a multi-center study of CFLD to determine the impact of early CFLD on general and disease-specific QOL. Methods: Ultrasound (US) patterns of normal (NL), heterogeneous (HTG), homogeneous (HMG), or nodular (NOD) were assigned in a prospective manner to predict those at risk for advanced CFLD. Parents were informed of results. We assessed parent/child-reported (age ≥5 years) HRQOL by PedsQL 4.0 Generic Core and CF Questionnaire-revised (CFQ-R) prior to US and annually. HRQOL scores were compared by US pattern at baseline (prior to US), between baseline and 1 year and at 5 years. Multivariate analysis of variance (MANOVA) with Hotelling-Lawley trace tested for differences among US groups. Results: Prior to US, among 515 participants and their parents there was no evidence that HTG or NOD US was associated with reduced PedsQL/CFQ-R at baseline. Parents of NOD reported no change in PedsQL/CFQ-R over the next year. Child-report PedsQL/CFQ-R (95 NL, 20 NOD) showed improvement between baseline and year 5 for many scales, including Physical Function. Parents of HMG children reported improved CFQ-R scores related to weight. Conclusions: Early undiagnosed or pre-symptomatic liver disease had no impact on generic or disease-specific HRQoL, and HRQoL was remarkably stable in children with CF regardless of liver involvement.
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    Heterogeneous Liver on Research Ultrasound Identifies Children with Cystic Fibrosis at High Risk of Advanced Liver Disease: Interim Results of a Prospective Observational Case-Controlled Study
    (Elsevier, 2020-04) Siegel, Marilyn J.; Freeman, A. Jay; Ye, Wen; Palermo, Joseph J.; Molleston, Jean P.; Paranjape, Shruti M.; Stoll, Janis; Leung, Daniel; Masand, Prakash; Karmazyn, Boaz; Harned, Roger; Ling, Simon C.; Navarro, Oscar M.; Karnsakul, Wikrom; Alazraki, Adina; Schwarzenberg, Sarah Jane; Seidel, F. Glen; Towbin, Alex; Alonso, Estella M.; Nicholas, Jennifer L.; Murray, Karen F.; Otto, Randolph K.; Sherker, Averell H.; Magee, John C.; Narkewicz, Michael R.; Pediatrics, School of Medicine
    Objective: To assess if a heterogeneous pattern on research liver ultrasound examination can identify children at risk for advanced cystic fibrosis (CF) liver disease. Study design: Planned 4-year interim analysis of a 9-year multicenter, case-controlled cohort study (Prospective Study of Ultrasound to Predict Hepatic Cirrhosis in CF). Children with pancreatic insufficient CF aged 3-12 years without known cirrhosis, Burkholderia species infection, or short bowel syndrome underwent a screening research ultrasound examination. Participants with a heterogeneous liver ultrasound pattern were matched (by age, Pseudomonas infection status, and center) 1:2 with participants with a normal pattern. Clinical status and laboratory data were obtained annually and research ultrasound examinations biannually. The primary end point was the development of a nodular research ultrasound pattern, a surrogate for advanced CF liver disease. Results: There were 722 participants who underwent screening research ultrasound examination, of which 65 were heterogeneous liver ultrasound pattern and 592 normal liver ultrasound pattern. The final cohort included 55 participants with a heterogeneous liver ultrasound pattern and 116 participants with a normal liver ultrasound pattern. All participants with at least 1 follow-up research ultrasound were included. There were no differences in age or sex between groups at entry. Alanine aminotransferase (42 ± 22 U/L vs 32 ± 19 U/L; P = .0033), gamma glutamyl transpeptidase (36 ± 34 U/L vs 15 ± 8 U/L; P < .001), and aspartate aminotransferase to platelet ratio index (0.7 ± 0.5 vs 0.4 ± 0.2; P < .0001) were higher in participants with a heterogeneous liver ultrasound pattern compared with participants with a normal liver ultrasound pattern. Participants with a heterogeneous liver ultrasound pattern had a 9.1-fold increased incidence (95% CI, 2.7-30.8; P = .0004) of nodular pattern vs a normal liver ultrasound pattern (23% in heterogeneous liver ultrasound pattern vs 2.6% in normal liver ultrasound pattern). Conclusions: Research liver ultrasound examinations can identify children with CF at increased risk for developing advanced CF liver disease.
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    Histologic Abnormalities in Children with Nonalcoholic Fatty Liver Disease and Normal or Mildly Elevated Alanine Aminotransferase Levels.
    (Elsevier, 2014-04) Molleston, Jean P.; Schwimmer, Jeffrey B.; Yates, Katherine P.; Murray, Karen F.; Cummings, Oscar W.; Lavine, Joel E.; Brunt, Elizabeth M.; Scheimann, Ann O.; Unalp-Arida, Aynur; Department of Pediatrics, IU School of Medicine
    Objectives: To investigate the histological spectrum of nonalcoholic fatty liver disease (NAFLD) in children with normal, mildly elevated (26–50 U/L boys, 23–44 U/L girls), or elevated (> 50 boys, > 44 girls) serum alanine aminotransferase (ALT) levels. Study design: The Nonalcoholic Steatohepatitis Clinical Research Network (NASH CRN) enrolls children 5–18 years with NAFLD. We analyzed baseline clinical and histological data from 91 children with suspected NAFLD and normal or mildly elevated ALT and liver biopsy within 180 days of ALT, and compared them with 392 children with elevated ALT. Results: Of 91 children, 17 (19%) had normal and 74 (81%) had mildly elevated ALT levels. Overall, 45% of biopsies had ≥ 33% steatosis, lobular inflammation grade was ≥ 2 in 22%, 81% had portal inflammation, 29% had ballooned hepatocytes, 35% had “suspicious/borderline” steatohepatitis, and 8% had definite NASH, 34% had NAFLD activity score (NAS) ≥ 4. Overall, 46% had fibrosis (38% mild/moderate and 8% bridging/cirrhosis). Marked steatosis (50% vs 24%) and fibrosis (54% vs 12%) were significantly more common in mildly elevated vs normal, with no difference in ballooning, inflammation, or NAS ≥ 4. Fibrosis stage 3/4 was seen in none of the children with normal ALT, and in 9% of the mildly elevated and 15% of the elevated. Conclusions: Liver biopsies of children with NAFLD with normal or mildly elevated ALT levels show significant histologic abnormalities, including advanced fibrosis in children with mildly elevated ALT. ALT thus may underestimate liver injury in NAFLD. Appropriate ALT cut-off levels can help identify children at risk for more severe disease.
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    Identification of PKD1L1 Gene Variants in Children with the Biliary Atresia Splenic Malformation Syndrome
    (Wiley, 2019) Berauer, John-Paul; Mezina, Anya I.; Okou, David T.; Sabo, Aniko; Muzny, Donna M.; Gibbs, Richard A.; Hegde, Madhuri R.; Chopra, Pankaj; Cutler, David J.; Perlmutter, David H.; Bull, Laura N.; Thompson, Richard J.; Loomes, Kathleen M.; Spinner, Nancy B.; Rajagopalan, Ramakrishnan; Guthery, Stephen L.; Moore, Barry; Yandell, Mark; Harpavat, Sanjiv; Magee, John C.; Kamath, Binita M.; Molleston, Jean P.; Bezerra, Jorge A.; Murray, Karen F.; Alonso, Estella M.; Rosenthal, Philip; Squires, Robert H.; Wang, Kasper S.; Finegold, Milton J.; Russo, Pierre; Sherker, Averell H.; Sokol, Ronald J.; Karpen, Saul J.; Pediatrics, School of Medicine
    Biliary atresia (BA) is the most common cause of end‐stage liver disease in children and the primary indication for pediatric liver transplantation, yet underlying etiologies remain unknown. Approximately 10% of infants affected by BA exhibit various laterality defects (heterotaxy) including splenic abnormalities and complex cardiac malformations — a distinctive subgroup commonly referred to as the biliary atresia splenic malformation (BASM) syndrome. We hypothesized that genetic factors linking laterality features with the etiopathogenesis of BA in BASM patients could be identified through whole exome sequencing (WES) of an affected cohort. DNA specimens from 67 BASM subjects, including 58 patient‐parent trios, from the NIDDK‐supported Childhood Liver Disease Research Network (ChiLDReN) underwent WES. Candidate gene variants derived from a pre‐specified set of 2,016 genes associated with ciliary dysgenesis and/or dysfunction or cholestasis were prioritized according to pathogenicity, population frequency, and mode of inheritance. Five BASM subjects harbored rare and potentially deleterious bi‐allelic variants in polycystin 1‐like 1, PKD1L1, a gene associated with ciliary calcium signaling and embryonic laterality determination in fish, mice and humans. Heterozygous PKD1L1 variants were found in 3 additional subjects. Immunohistochemical analysis of liver from the one BASM subject available revealed decreased PKD1L1 expression in bile duct epithelium when compared to normal livers and livers affected by other non‐cholestatic diseases. Conclusion WES identified bi‐allelic and heterozygous PKD1L1 variants of interest in 8 BASM subjects from the ChiLDReN dataset. The dual roles for PKD1L1 in laterality determination and ciliary function suggest that PKD1L1 is a new, biologically plausible, cholangiocyte‐expressed candidate gene for the BASM syndrome.
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    Identification of Polycystic Kidney Disease 1 Like 1 Gene Variants in Children With Biliary Atresia Splenic Malformation Syndrome
    (Wiley, 2019-01-21) Berauer, John-Paul; Mezina, Anya I.; Okou, David T.; Sabo, Aniko; Muzny, Donna M.; Gibbs, Richard A.; Hegde, Madhuri R.; Chopra, Pankaj; Cutler, David J.; Perlmutter, David H.; Bull, Laura N.; Thompson, Richard J.; Loomes, Kathleen M.; Spinner, Nancy B.; Rajagopalan, Ramakrishnan; Guthery, Stephen L.; Moore, Barry; Yandell, Mark; Harpavat, Sanjiv; Magee, John C.; Kamath, Binita M.; Molleston, Jean P.; Bezerra, Jorge A.; Murray, Karen F.; Alonso, Estella M.; Rosenthal, Philip; Squires, Robert H.; Wang, Kasper S.; Finegold, Milton J.; Russo, Pierre; Sherker, Averell H.; Sokol, Ronald J.; Karpen, Saul J.; Pediatrics, School of Medicine
    Biliary atresia (BA) is the most common cause of end-stage liver disease in children and the primary indication for pediatric liver transplantation, yet underlying etiologies remain unknown. Approximately 10% of infants affected by BA exhibit various laterality defects (heterotaxy) including splenic abnormalities and complex cardiac malformations — a distinctive subgroup commonly referred to as the biliary atresia splenic malformation (BASM) syndrome. We hypothesized that genetic factors linking laterality features with the etiopathogenesis of BA in BASM patients could be identified through whole exome sequencing (WES) of an affected cohort. DNA specimens from 67 BASM subjects, including 58 patient-parent trios, from the NIDDK-supported Childhood Liver Disease Research Network (ChiLDReN) underwent WES. Candidate gene variants derived from a pre-specified set of 2,016 genes associated with ciliary dysgenesis and/or dysfunction or cholestasis were prioritized according to pathogenicity, population frequency, and mode of inheritance. Five BASM subjects harbored rare and potentially deleterious bi-allelic variants in polycystin 1-like 1, PKD1L1, a gene associated with ciliary calcium signaling and embryonic laterality determination in fish, mice and humans. Heterozygous PKD1L1 variants were found in 3 additional subjects. Immunohistochemical analysis of liver from the one BASM subject available revealed decreased PKD1L1 expression in bile duct epithelium when compared to normal livers and livers affected by other non-cholestatic diseases. Conclusion: WES identified bi-allelic and heterozygous PKD1L1 variants of interest in 8 BASM subjects from the ChiLDReN dataset. The dual roles for PKD1L1 in laterality determination and ciliary function suggest that PKD1L1 is a new, biologically plausible, cholangiocyte-expressed candidate gene for the BASM syndrome.
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