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Holt-Oram syndrome comprises a rare spectrum of congenital cardiovascular and appendicular skeletal anomalies. However, only a few cases have reported lung involvement in Holt-Oram syndrome. We reported the rare case of a 1-year-old male child patient who presented with upper limb abnormalities and respiratory distress and was diagnosed with pulmonary agenesis and pulmonary arterial hypertension secondary to an atrial septal defect.
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http://dx.doi.org/10.1055/s-0043-1776882 | DOI Listing |
J Cardiol Cases
July 2025
Department of Cardiology, Fujita Health University School of Medicine, Toyoake, Japan.
Unlabelled: Holt-Oram syndrome (HOS; OMIM 142900) is a rare autosomal dominant disorder, typically involving upper limb anomalies and cardiac septal defects. HOS is caused by mutations in the gene, which encodes a T-box transcription factor. We report a Japanese family with a novel -Q469* nonsense variant that exhibited atypical HOS characteristics, including early-onset sick sinus syndrome (SSS), but no apparent upper limb abnormalities.
View Article and Find Full Text PDFJ Appl Genet
March 2025
Precision Laboratory of Vascular Medicine, Shanxi Cardiovascular Hospital Affiliated Shanxi Medical University, Taiyuan, 030024, China.
We report the clinical and genetic features of three adult patients with congenital heart disease-associated pulmonary arterial hypertension (CHD-PAH) carrying rare T-box variants. All three patients had weakness and cyanosis. Two patients had chest tightness, dry cough, and hemoptysis, and one patient had lower limb edema.
View Article and Find Full Text PDFPrenat Diagn
April 2025
Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, China.
Glob Med Genet
March 2025
Unit of Clinical Pediatrics, Department of Clinical and Experimental Medicine, University of Catania, Catania, Italy.
Background: Polydactyly and syndactyly, which are commonly encountered congenital limb deformities, rarely occur together and are linked with significant genetic mutations. This report sheds light on a unique co-presentation involving mutations in both the GLI3 and TBX5 genes, offering a deeper understanding of the genetic interactions that may influence limb development. This case report is important to increase our knowledge on genetic bases of limb malformations.
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