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XMEN
X-linked immunodeficiency with magnesium defect, Epstein-Barr virus infection, and neoplasia (typically known by the acronym XMEN) is a disorder that affects the immune system in males. 
  • 640
  • 04 Jan 2021
Topic Review
Xia-Gibbs Syndrome
Xia-Gibbs syndrome is a neurological disorder characterized by weak muscle tone (hypotonia), mild to severe intellectual disability and delayed development.
  • 853
  • 24 Dec 2020
Topic Review
Xeroderma Pigmentosum
Xeroderma pigmentosum, which is commonly known as XP, is an inherited condition characterized by an extreme sensitivity to ultraviolet (UV) rays from sunlight. This condition mostly affects the eyes and areas of skin exposed to the sun. Some affected individuals also have problems involving the nervous system. The signs of xeroderma pigmentosum usually appear in infancy or early childhood. Many affected children develop a severe sunburn after spending just a few minutes in the sun. The sunburn causes redness and blistering that can last for weeks. Other affected children do not get sunburned with minimal sun exposure, but instead tan normally. By age 2, almost all children with xeroderma pigmentosum develop freckling of the skin in sun-exposed areas (such as the face, arms, and lips); this type of freckling rarely occurs in young children without the disorder. In affected individuals, exposure to sunlight often causes dry skin (xeroderma) and changes in skin coloring (pigmentation). This combination of features gives the condition its name, xeroderma pigmentosum.  
  • 525
  • 24 Dec 2020
Topic Review
XDH Gene
Xanthine dehydrogenase
  • 440
  • 24 Dec 2020
Topic Review
Xanthomonas campestris
Xanthomonas campestris pv. campestris (Xcc) is a Gram-negative, aerobic, vascular, and motile bacterium with a single flagellum, which causes the disease identified as black rot in Brassica crops.
  • 868
  • 30 Aug 2021
Topic Review
X-linked Thrombocytopenia
X-linked thrombocytopenia is a bleeding disorder that primarily affects males.
  • 610
  • 24 Dec 2020
Topic Review
X-linked Spondyloepiphyseal Dysplasia Tarda
X-linked spondyloepiphyseal dysplasia tarda is a condition that impairs bone growth and occurs almost exclusively in males.
  • 418
  • 24 Dec 2020
Topic Review
X-linked Sideroblastic Anemia and Ataxia
X-linked sideroblastic anemia and ataxia is a rare condition characterized by a blood disorder called sideroblastic anemia and movement problems known as ataxia. This condition occurs only in males.  
  • 473
  • 24 Dec 2020
Topic Review
X-linked Sideroblastic Anemia
X-linked sideroblastic anemia is an inherited disorder that prevents developing red blood cells (erythroblasts) from making enough hemoglobin, which is the protein that carries oxygen in the blood.
  • 612
  • 24 Dec 2020
Topic Review
X-linked Myotubular Myopathy
X-linked myotubular myopathy is a condition that primarily affects muscles used for movement (skeletal muscles) and occurs almost exclusively in males. People with this condition have muscle weakness (myopathy) and decreased muscle tone (hypotonia) that are usually evident at birth.  
  • 378
  • 24 Dec 2020
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