genetic screening

基因筛查
  • 文章类型: Case Reports
    先天性全身性脂肪营养不良2型(CGL2)是一种罕见的常染色体隐性遗传疾病,其特征是脂肪组织几乎完全缺失,导致各种代谢并发症。我们介绍了一名一岁男性从六个月大开始表现出进行性腹胀的情况。体格检查显示出独特的特征,包括三角相,超端粒,瘦弱的外观,没有口腔脂肪,和肝脾肿大.实验室调查显示转氨酶升高和血脂紊乱,而影像学检查证实肝脾肿大无全身异常。肝活检提示大泡性脂肪变性和即将发生的肝硬化。基因检测揭示了BSCL2基因的纯合致病变异(c.603C>T),确认CGL2。孩子正在接受定期随访,向父母提供遗传咨询。这个案例强调了早期识别的重要性,基因诊断,并定期监测管理这种罕见的情况。
    Congenital generalized lipodystrophy type 2 (CGL2) is a rare autosomal recessive disorder characterized by the near-total absence of adipose tissue, leading to various metabolic complications. We present the case of a one-year-old male who exhibited progressive abdominal distension from six months of age. Physical examination revealed distinctive features including triangular facies, hypertelorism, an emaciated appearance with absent buccal fat, and hepatosplenomegaly. Laboratory investigations showed elevated transaminases and a deranged lipid profile, while imaging confirmed hepatosplenomegaly without systemic anomalies. A liver biopsy indicated macrovesicular steatosis and impending cirrhosis. Genetic testing revealed a homozygous pathogenic variant in the BSCL2 gene (c.604C>T), confirming CGL2. The child is under regular follow-up, with genetic counseling provided to the parents. This case underscores the importance of early recognition, genetic diagnosis, and regular monitoring in managing this rare condition.
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  • 文章类型: Case Reports
    心律失常性心肌病(ACM)是一种与心室组织的纤维脂肪组织置换相关的遗传性心肌病。该疾病可引起心室功能障碍和心律失常,并可增加心源性猝死的风险。这种心肌病可以有不同的临床表现,尤其是在儿童和年轻的成年人群。在这份报告中,我们描述了一名18岁女性心肌炎的病例作为ACM的初始表现。她因室性心律失常而出现心脏骤停。抵达后,心肌水肿和延迟钆增强出现在心脏磁共振成像,没有观察到心室变化,使诊断与心肌炎一致。基因检测显示desmoplakin基因中的致病性突变与ACM一致。鉴于该患者疾病的非常规初始表现,早期考虑基因检测可能有助于年轻患者ACM的早期诊断和治疗.
    Arrhythmogenic cardiomyopathy (ACM) is an inherited cardiomyopathy associated with fibrofatty tissue replacement of the ventricular tissue. The disease can cause ventricular dysfunction and arrhythmias and can increase the risk of sudden cardiac death. This cardiomyopathy can have variable clinical presentations, especially in the pediatric and young adult populations. In this report, we describe the case of an 18-year-old female with myocarditis as the initial presentation of ACM. She presented following a resuscitated cardiac arrest due to ventricular arrhythmia. On arrival, myocardial edema and delayed gadolinium enhancement were present on cardiac magnetic resonance imaging, with no ventricular changes observed, making the diagnosis consistent with myocarditis. Genetic testing revealed a pathogenic mutation in the desmoplakin gene consistent with ACM. Given the unconventional initial presentation of this patient\'s disease, early consideration of genetic testing may be beneficial to aid in the early diagnosis and management of ACM in young patients.
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  • 文章类型: Case Reports
    自发性冠状动脉夹层(SCAD)是年轻女性心肌梗塞的罕见原因。纤维肌性发育不良(FMD)与SCAD的相关性已得到很好的证实;相当比例的SCAD患者可能在其他非冠状动脉中有典型的FMD表现。目前的共识建议在SCAD中使用计算机断层扫描血管造影(CTA)或磁共振血管造影(MRA)进行从头部到骨盆的动脉成像筛查。在高危病例中应考虑对口蹄疫进行基因检测。我们介绍了两例与FMD相关的SCAD病例,并讨论了遗传筛查在此类患者中的意义。
    Spontaneous coronary artery dissection (SCAD) is a rare cause of myocardial infarction in young women. An association of fibromuscular dysplasia (FMD) with SCAD has been well established; a significant proportion of SCAD patients may have typical FMD findings in other noncoronary arteries. The current consensus recommends arterial imaging screening from head to pelvis using computed tomography angiography (CTA) or magnetic resonance angiography (MRA) in SCAD. Genetic testing for FMD should be considered in high-risk cases. We present two cases of SCAD associated with FMD and discuss the significance of genetic screening in such patients.
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  • 文章类型: Case Reports
    作者描述了一名16岁男性的案例,该男性在6个月前由于视力模糊而被偶然发现血压为200/?mmHg,并被诊断为“高血压3级,肾功能不全的高风险,高血压脑病,高血压性心脏病,进行相关检查后,眼底出血。开始降压治疗后,他的血压波动约为120/90mmHg。虽然他高血压的诊断工作尚无定论,他在体格检查中患有严重的高血压,短指E型和身材矮小。患者在严格控制血压后,心脏损害和肾功能不全最终恢复正常,提示高血压和短指综合征本身不会引起心脏和肾脏损害。
    The authors describe the case of a 16-year-old male who was incidentally found to have a blood pressure of 200/? mmHg 6 months previously due to blurred vision and was diagnosed with \"high risk of hypertension grade 3, renal insufficiency, hypertensive encephalopathy, hypertensive heart disease, and fundus hemorrhage\" after relevant examinations were performed. His blood pressure fluctuated around 120/90 mmHg after beginning antihypertensive treatment. While the diagnostic work-up of his hypertension was inconclusive, he had severe hypertension with brachydactyly type E and short stature on physical examination. The patient\'s cardiac damage and renal insufficiency ultimately returned to normal after strict blood pressure control, suggesting that hypertension and brachydactyly syndrome alone do not cause cardiac and renal damage.
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  • 文章类型: Journal Article
    目的:色盲是一种罕见的静止性视网膜疾病,主要影响视锥细胞。患有色盲的人表现为畏光,眼球震颤,视力下降(VA),和色盲。已经鉴定了负责色盲的多个基因(例如环核苷酸门控通道亚基α3[CNGA3]和激活转录因子6)。研究已经评估了基因治疗在色盲中的作用。因此,治疗和预防,表型和基因型的鉴定至关重要。这里,我们描述了沙特阿拉伯患者与色盲相关的临床表现和基因突变.
    方法:本病例系列研究包括15例患者的临床表现,暗示着色盲,他们接受了眼科和系统评估。具有典型色盲表型的患者使用全外显子组测试进行遗传评估。
    结果:所有患者有眼球震颤(n=15),93.3%有畏光(n=14)。此外,所有患者(n=15)的VA均较差。在93.3%(n=14)的患者中观察到有散光的远视,在93.3%的患者中观察到完全色盲(n=14)。在家族史的背景下,所有患者的父母(n=15)都是遗传携带者,血缘率高(82%,n=9个家庭)。视网膜电描记术在66.7%(n=10)的患者中显示出视锥功能障碍,在33.3%(n=5)的患者中显示出视锥功能障碍。关于基因型特征,93%的患者有CNGA3变异(n=14)分类为致病性1类(86.7%,n=13)。Further,66.7%(n=10)的患者也携带c.661C>TDNA变异。Further,这些突变的患者是纯合子.还鉴定出其他三个变体:c.1768G>A(13.3%,n=2),c.830G>A(6.6%,n=1),c。822G>T(6.6%,n=1)。
    结论:血缘关系和属于同一部落是疾病遗传的主要危险因素。最常见的基因型是具有c.661C>TDNA变异的CNGA3。我们建议提高家庭的认识,并为这种高度衰弱的疾病提供遗传咨询。
    OBJECTIVE: Achromatopsia is a rare stationary retinal disorder that primarily affects the cone photoreceptors. Individuals with achromatopsia present with photophobia, nystagmus, reduced visual acuity (VA), and color blindness. Multiple genes responsible for achromatopsia have been identified (e.g. cyclic nucleotide-gated channel subunit alpha 3 [CNGA3] and activating transcription factor 6). Studies have assessed the role of gene therapy in achromatopsia. Therefore, for treatment and prevention, the identification of phenotypes and genotypes is crucial. Here, we described the clinical manifestations and genetic mutations associated with achromatopsia in patients from Saudi Arabia.
    METHODS: This case series study included 15 patients with clinical presentations, suggestive of achromatopsia, who underwent ophthalmological and systemic evaluations. Patients with typical achromatopsia phenotype underwent genetic evaluation using whole-exome testing.
    RESULTS: All patients had nystagmus (n = 15) and 93.3% had photophobia (n = 14). In addition, all patients (n = 15) had poor VA. Hyperopia with astigmatism was observed in 93.3% (n = 14) and complete color blindness in 93.3% of the patients (n = 14). In the context of family history, both parents of all patients (n = 15) were genetic carriers, with a high consanguinity rate (82%, n = 9 families). Electroretinography showed cone dysfunction with normal rods in 66.7% (n = 10) and both cone-rod dysfunction in 33.3% (n = 5) patients. Regarding the genotypic features, 93% of patients had variants in CNGA3 (n = 14) categorized as pathogenic Class 1 (86.7%, n = 13). Further, 66.7% (n = 10) of patients also harbored the c.661C>T DNA variant. Further, the patients were homozygous for these mutations. Three other variants were also identified: c.1768G>A (13.3%, n = 2), c.830G>A (6.6%, n = 1), and c. 822G >T (6.6%, n = 1).
    CONCLUSIONS: Consanguinity and belonging to the same tribe are major risk factors for disease inheritance. The most common genotype was CNGA3 with the c.661C>T DNA variant. We recommend raising awareness among families and providing genetic counseling for this highly debilitating disease.
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  • 文章类型: Case Reports
    囊性纤维化(CF)是一种多器官疾病,由囊性纤维化跨膜调节因子(CFTR)中的常染色体隐性遗传(AR)突变引起,主要充当氯通道。CF最常见于高加索人群。儿科患者常见的临床表现包括慢性咳嗽,呼吸道感染,如肺炎,消化症状,发育迟缓,和营养不良由于胃肠道吸收不良和胰腺功能不全。由于CFTR中功能失调的汗腺引起的过多的汗液氯化钠损失导致体积收缩和继发性醛固酮增多症,导致肾钾损失和代谢性碱中毒。低钾血症性低氯血症代谢性碱中毒是一种已知但不常见的疾病表现,记录为假性Bartter综合征。CFTR基因中的常见突变现在包括在产前遗传筛查程序中。我们描述了一名非洲裔婴儿的产前筛查正常的病例,该婴儿患有严重的低钾性低氯血症代谢性碱中毒,并被诊断为CF,并进一步遗传证实了诊断。
    Cystic fibrosis (CF) is a multiorgan disease, caused by autosomal recessive (AR) mutations in the cystic fibrosis transmembrane regulator (CFTR) acting primarily as a chloride channel. CF is most commonly diagnosed in Caucasian populations. Common clinical presentations in pediatric patients include chronic cough, respiratory tract infections such as pneumonia, digestive symptoms, and stunted growth, and malnutrition due to gastrointestinal malabsorption and pancreatic insufficiency. Excessive sweat sodium chloride losses due to dysfunctional sweat glands in CFTR result in volume contraction and secondary hyperaldosteronism leading to renal potassium losses and metabolic alkalosis. Hypokalemic hypochloremic metabolic alkalosis is a known but uncommon presenting sign of the disease, documented as pseudo Bartter syndrome. Common mutations in the CFTR gene are now included in prenatal genetic screening programs. We describe the case of an infant of African descent with normal prenatal screening who presented with severe hypokalemic hypochloremic metabolic alkalosis and was diagnosed with CF with further genetic confirmation of the diagnosis.
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  • 文章类型: Case Reports
    Gorlin-Goltz综合征(GGS)具有广泛的表达能力,大多数病例是根据口腔检查结果首次诊断的。早期干预可以减轻其严重程度。
    所有患者的主诉是疼痛和肿胀。放射学和组织病理学评估的临床检查证实了诊断。
    本系列介绍了在五年(2018-2022年)的时间框架内治疗的六例GGS。
    治疗范围从摘除,化学烧灼和外周骨切除术,以积极的方式,如切除和重建。
    该系列包括6名年龄在12至42岁之间的患者,其中四个是女性,两个是男性,对高度侵略性的形式表现得很少,并且经常表现出不可预测的表现。
    这强调了长期定期随访和遗传筛查对早期发现的重要性,从而降低疾病的强度和侵袭性。
    UNASSIGNED: Gorlin-Goltz syndrome (GGS) has a wide range of expressivity, with a majority of cases being first diagnosed from the oral findings. Early intervention can reduce its severity.
    UNASSIGNED: The primary complaints of all the patients were pain and swelling. Clinical examination with radiological and histopathological evaluation confirmed the diagnosis.
    UNASSIGNED: This series presents the six cases of GGS treated over a time frame of five years (2018-2022).
    UNASSIGNED: The treatments range from enucleation, chemical cauterisation and peripheral ostectomy to aggressive modalities such as resection and reconstruction.
    UNASSIGNED: This series comprises of six patients with ages ranging from 12 to 42 years, four of which were female and two were male presenting minimal expression to highly aggressive forms and its unpredictable frequent manifestation.
    UNASSIGNED: This emphasises the significance of long-term periodic follow-up and genetic screening for early detection, thereby reducing the intensity and aggressiveness of the disease.
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  • 文章类型: Case Reports
    致命多发性翼状胬肉综合征是一种非常罕见的遗传性疾病。这种情况的表现包括胎儿生长不足,颅面异常,关节挛缩,和皮肤织带(翼状)。这种疾病在出生前或出生后不久是致命的。我们报告了一例致命的多发性翼状胬肉综合征,包括翼状胬肉累及腋窝,双侧肘前窝,还有腹股沟.累及多个下肢和上肢关节的关节发育。腭裂,小口和张口的限制,网状脖子,不对称的小而狭窄的胸部,模棱两可的生殖器,凹陷和宽阔的鼻梁,前球形倾斜,低设定,畸形,耳朵向后旋转,翼状突起,手和火箭底脚的并举和坎托迪。LMPS是一种先天性遗传疾病,具有多种异常,在怀孕的第二和第三个三个月或出生后不久是致命的。通过基因检测和咨询,它可以防止在随后的怀孕中复发。
    Lethal multiple pterygium syndrome is a very rare genetic disorder. The manifestations of this condition include growth deficiency of the fetus, craniofacial anomalies, joint contracture, and skin webbing (pterygia). This disorder is fatal before birth or shortly after birth. We reported a case of lethal multiple pterygium syndrome with multiple anomalies including pterygia involving the axilla, bilateral antecubital fossa, and groin. Arthrogryposis involving multiple lower and upper extremities joints. Cleft palate, microstomia and limitation of mouth opening, webbed neck, asymmetric small and narrow chest, ambiguous genitalia, depressed and wide nasal bridge, antemongoloid slant, low-set, malformed, and posteriorly rotated ears, pterygia, syndactyly and camptodactyly of hands and rocket bottom feet. LMPS is a congenital genetic disease with multiple anomalies that is fatal in the second and third trimesters of pregnancy or shortly after birth. With genetic testing and counseling, it can be prevented from recurring in subsequent pregnancies.
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  • 文章类型: Case Reports
    子宫内膜异位症是一种导致子宫内膜组织在子宫外增殖的疾病。这种情况通常归因于雌激素失衡,并可能导致严重的炎症和出血,据信,10%的女性患者会经历这种疾病。子宫内膜生长可发生在卵巢中,输卵管,胃,和胃肠道。12%的子宫内膜异位症病例可以在肠道中看到,其中直肠乙状结肠占这些病例的72%。肠道子宫内膜异位症患者可能出现中度症状,比如便秘,但他们可能会经历更严重的并发症,以及如肠道出血。尽管结肠中子宫内膜组织的存在已经是一种罕见的现象,子宫内膜生长在乙状结肠的整个粘膜上更罕见。2010年的一项研究报告称,自1931年以来,此类病例中只有21例发生。该病例报告中的患者有一个基因(MUTYH)突变,使她面临结直肠癌的风险,她最终接受了乙状结肠节段性切除术。标本的最终病理显示患者的病变为子宫内膜生长。在这个案例报告中,我们提出了一个罕见的发现,子宫内膜组织通过患者的肠腔穿孔,通过手术干预成功治疗。
    Endometriosis is a disease that causes endometrial tissues to proliferate outside of the uterus. The condition is often attributed to estrogen imbalance and can lead to severe inflammation and bleeding, where it is believed that 10% of female patients experience this illness. Endometrial growth can occur in the ovaries, fallopian tubes, stomach, and gastrointestinal tract. Twelve percent of endometriosis cases can be seen in the intestines, with the rectosigmoid colon accounting for 72% of these cases. Patients with intestinal endometriosis may present with moderate symptoms, such as constipation, but they may experience more serious complications as well such as intestinal bleeding. Although the presence of endometrial tissue in the colon is already a rare phenomenon, it is even rarer for endometrial growth to perforate the entire mucosa of the sigmoid colon. A study in 2010 reported that only 21 of such cases have occurred since 1931. The patient in this case report had a gene (MUTYH) mutation that put her at risk for colorectal cancer, and she was ultimately treated with segmental resection of the sigmoid colon. The final pathology of the specimen revealed that the patient\'s lesion was endometrial growth. In this case report, we present a rare finding of endometrial tissue perforating through a patient\'s intestinal lumen, which was successfully treated with surgical intervention.
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  • 文章类型: Case Reports
    Pearson骨髓-胰腺综合征是一种罕见的多系统线粒体疾病,是由线粒体DNA突变引起的氧化磷酸化缺陷的结果。被诊断患有这种疾病的婴儿的平均预后是在4岁内死亡。该疾病在新生儿期通常具有非典型表现,导致这种罕见综合征经常被误诊。本报告详细介绍了Pearson综合征在3个月大的有全血细胞减少病史的男性中的诊断。
    Pearson marrow-pancreas syndrome is a rare multisystem mitochondrial disease that is a result of defective oxidative phosphorylation caused by mitochondrial DNA mutations. The average prognosis of infants diagnosed with this disease is death within four years of age. The disease often carries an atypical presentation during the neonatal period causing this rare syndrome to be frequently misdiagnosed. The current report details the diagnosis of Pearson syndrome in a three-month-old male with a history of pancytopenia.
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