Genetic Conditions Explained: Hereditary Coproporphyria

Hereditary Coproporphyria (HCP) is a rare inherited metabolic disorder that belongs to a group of conditions known as the porphyrias. These disorders affect the body’s ability to produce heme, an essential component of haemoglobin, the molecule in red blood cells that carries oxygen. While HCP is uncommon, recognising its features is important, as timely diagnosis […]
Genetic Conditions Explained: Fukuyama Congenital Muscular Dystrophy

Fukuyama Congenital Muscular Dystrophy (FCMD) is a rare inherited condition that primarily affects muscle development and brain structure. First described in Japan, FCMD is most commonly seen in individuals of Japanese ancestry, although cases have been reported worldwide. As a form of congenital muscular dystrophy, symptoms are present from birth or early infancy and can […]
Genetic Conditions Explained: Alexander Disease.

Alexander disease is a rare and progressive neurological inherited disorder that belongs to a group of conditions known as leukodystrophies. Leukodystrophies are diseases that affect the white matter of the brain. White matter is essential for transmitting signals between different parts of the brain and the rest of the body. When it becomes damaged, neurological […]
Genetic Conditions Explained: Christianson Syndrome.

Christianson syndrome is a rare genetic condition that primarily affects the nervous system and presents early in life. Although uncommon, it is an important diagnosis within clinical genetics due to its distinctive features, genetic basis, and implications for families. What is Christianson Syndrome? Christianson syndrome is an X-linked neurodevelopmental disorder characterised by significant developmental delay, […]
Genetic Conditions Explained: RNU4atac-opathy

RNU4atac-opathy is an exceptionally rare genetic condition that most people, outside of clinical genetics, have never heard of. Yet for affected families, it can have profound and life-altering implications. As our understanding of genomics evolves, conditions like RNU4atac-opathy highlight both the complexity of human biology and the importance of specialised genetic care. What is RNU4atac-opathy? […]
Genetic Conditions Explained: Autosomal Dominant Tubulointerstitial Kidney Disease

Autosomal Dominant Tubulointerstitial Kidney Disease due to UMOD mutations (ADTKD-UMOD) is a rare inherited kidney disorder that leads to progressive loss of kidney function over time. Although uncommon, it is one of the most frequent monogenic causes of chronic kidney disease and an important condition to recognize in families with unexplained kidney failure. At Rosalind […]
Genetic Conditions Explained: Hepatic Veno-Occlusive Disease with Immunodeficiency (VODI)

Hepatic Veno-Occlusive Disease with Immunodeficiency (VODI) is a rare inherited condition that affects both the liver and the immune system. Although uncommon, it is an important diagnosis to consider in children who develop unexplained liver disease alongside recurrent infections. Understanding the genetic basis of this condition can help families access appropriate care, surveillance, and genetic […]
Rare Disease Day: Why Rare Matters

By Matt Burgess Today, February 28, on Rare Disease Day, we join millions of people around the world in recognising individuals and families affected by rare conditions. While each rare disease affects relatively few people, collectively they are far from rare. It is estimated that over 300 million people globally live with one of more […]
Genetic Conditions Explained: Maternal Effect Gene–Related Multilocus Imprinting Disturbances (MEG-MLID)

Maternal Effect Gene–Related Multilocus Imprinting Disturbances (MEG-MLID) are a rare and complex group of conditions that sit at the intersection of reproductive genetics and epigenetics. Although the name sounds technical, the underlying concept is both fascinating and clinically important: changes in genes carried by a mother can disrupt the “imprinting” of multiple genes in her […]
Genetic Conditions Explained: von Hippel–Lindau (VHL) Syndrome.

Von Hippel–Lindau (VHL) syndrome is a rare inherited condition that increases the risk of developing certain types of tumours and cysts throughout one’s lifetime. Although many of these tumours are benign (non-cancerous), some can be malignant and require careful monitoring and treatment. Early diagnosis through genetic testing and specialist surveillance can be life-saving. At Rosalind […]