Research on genes affecting tumors without lymph node metastasis is limited, hence this study employed both bioinformatic and experimental approaches to identify specific genes associated with lung cancer adenocarcinoma (LUAD) before lymph node metastasis occurs. Expression profiles of mRNAs and lncRNAs and LUAD clinical data were downloaded from the Cancer Genome Atlas (TCGA) using R software to identify differentially expressed genes (DEGs) associated with N0 and N + status. TargetScan, miRTarBase, and miRDB databases were used to identify interactions between miRNAs and mRNAs. The DIANA database and lncBase tool were used to find the association between lncRNA and miRNA. After selecting some genes, the expression of candidate genes was confirmed by real-time RT-PCR technique. Following the knockdown LINC00894 gene using the shRNA technique, its effect on invasion, migration, and apoptosis in the calu-3 cell line was investigated. In total, we found 321 specific DEGs not only in N0 vs. normal but also in N0 Vs. N + in LUAD, most of which were lncRNA and we identified a ceRNA network containing nine lncRNAs with the highest degree of connectivity. Among them, in addition to bioinformatic analyses, LINC00894 and YEATS2-AS1 were significantly increased in tumor tissues compared to normal tissues (P = 0.0001). also, SUGP2 that was shared in both lncRNA-related ceRNA subnetworks was significantly upregulated (P = 0.0001). Additionally, following the knockdown of LINC00894 in Calu-3 cell line, a significant decrease in migration and invasion was observed, but early apoptosis was significantly increased in the shLINC00894(48 h) group (P = 0.007). The findings of the present study show that lncRNAs play an important role in the N0 status of LUAD. Moreover, LINC00894, YEATS2-AS1, and SUGP2 can act as biomarkers in patients with N0 LUAD.

Background and Objectives Microtia-atresia is a rare congenital anomaly, which characterized by a small, abnormally shaped auricle (microtia) accompanied with narrow, blocked or absent ear canal (atresia). Microtia can occur appear either as independent clinical abnormality or as part of a syndrome. Due to hearing loss, 80%–90% of patients are at increasing risk of speech and poor academic performance. This abnormality with genetic predisposition and autosomal dominant or recessive mode of Mendelian hereditary, as well as forms due to chromosomal aberrations, occur in varying degrees from 0.83 to 17.4 per 10,000 births, usually unilateral form with more common in males. Case Presentation In this article, a term male neonate with microtia-atresia, born of a 34-year-old mother, was reported. On initial examination by a pediatrician, not properly formation of external right ear and absence of the ear canal was observed in infant. In a closer examination no craniofacial anomalies and no microtia associated syndrome was not observed.

Pericentric inversion of Chromosome 9 is a common chromosomal abnormality, occasionally linked to clinical conditions such as ambiguous genitalia, warranting its inclusion in differential diagnoses. Sexual ambiguity is a tragic and highly distressing condition that imposes deep emotional and spiritual concerns on the family. Therefore, it is essential to adopt a rational and immediate approach, including clinical, hormonal, genetic, molecular, and radiographic investigations, to determine its cause and guide the therapeutic strategy. A 35-year-old gravida 1 Iranian woman at 37 weeks of pregnancy delivered a 1900-g newborn via cesarean section due to intrauterine growth restriction. The newborn exhibited ambiguous genitalia, including severe hypospadias and a micropenis. Karyotyping revealed a normal chromosomal count with a pericentric inversion of Chromosome 9 (46XY, inv (9) (p12q13)). Hormonal and ultrasound evaluations were normal, and no family history of sexual development disorders was noted. Pericentric inversion of Chromosome 9 can result in ambiguous genitalia, emphasizing the importance of karyotyping in the diagnostic evaluation for proper management and counseling.