The CLCF1 gene helps make a signaling protein that supports nerves involved in sweating, body temperature, feeding, and muscle control. This gene plays an important role in early life, and when it does not work properly, babies can have feeding trouble, muscle stiffness, and episodes of high fever. Later, some people develop unusual sweating when they are cold, part of a rare condition called cold induced sweating syndrome. CLCF1 is not a gene that is widely known in popular culture.
What is a gene?
A gene is a stretch of DNA that carries instructions your cells use to make molecules or direct processes in the body. Some genes hold the instructions for building proteins, the parts of cells that do much of the work. Other genes mainly help regulate when certain processes happen, where they happen, and how strongly they operate. Together, genes affect how the body develops and works, and they can influence how you respond to food, stress, or medications. For a deeper look at this topic, you can find more in the LearnHub.
Overview
CLCF1Gene function
What if the gene works
The CLCF1 gene helps make a signaling protein that supports nerve cell survival and communication. It works with partner proteins to guide parts of the autonomic nervous system, including pathways involved in sweating and temperature control.
Risk
What if the gene does not work
More severe variants in the CLCF1 gene can cause Crisponi syndrome, with newborn feeding problems, stiffness, and fever episodes. Milder variants may lead mainly to cold-induced sweating syndrome later, often with variable autonomic symptoms and spinal curvature.
Treatment
What does that mean for your treatment
For people with a pathogenic or loss-of-function variant in the CLCF1 gene, no CLCF1-specific treatment or drug selection approach is currently established in clinical guidelines. Care is supportive and guided by the person’s symptoms rather than the gene itself. The CLCF1 gene is also being studied in cancer and immune signaling research, but this has not led to guideline-based treatments for inherited CLCF1-related conditions.
Conditions associated with CLCF1
Gene function
What if the gene works
Your cells use the CLCF1 gene to send growth and support messages between tissues. These messages are especially important in parts of the nervous system that help control automatic body functions. In simple terms, this is what the CLCF1 gene does in the body during normal development and everyday cell communication.
The CLCF1 gene makes a protein that cells release to carry messages. When that message reaches a target cell, it helps start signals that support growth and survival.
Signals from the CLCF1 gene help certain nerve cells grow, mature, and stay active. This is especially important in nerve pathways that help regulate automatic body functions.
Many cells send out the CLCF1 protein together with a partner made from the CRLF1 gene. This pairing helps the protein leave the cell and remain available for signaling.
What is a variant?
A genetic variant is a small difference in the DNA sequence of a gene. These changes are common and help create normal human diversity, such as differences in appearance, metabolism, or how the body responds to environmental influences. Many variants do not cause any noticeable effect and simply represent natural genetic variation. In some situations, though, a variant can change how a gene functions more substantially and may contribute to or cause a genetic condition.
Genetic variants
What if the gene does not work
Most disease causing variants in the CLCF1 gene make the protein unstable, poorly folded, or hard to release from the cell, so signaling between cells drops. In how CLCF1 gene variants affect protein signaling, some changes mainly weaken the protein’s pairing with CRLF1, while more disruptive variants can leave little or no signaling. This range from milder to more severe loss of function can influence how early cold induced sweating syndrome features appear and how marked they become.
How variants are linked to conditions
Pathogenic variants in the CLCF1 gene cause cold-induced sweating syndrome type 2, a rare inherited condition that may include feeding and breathing problems in newborns and later episodes of sweating triggered by cool temperatures. In infancy, the same CLCF1 gene condition may be described as Crisponi syndrome, now generally considered part of the same spectrum.
A variant is not necessarily a diagnosis
Gene variants are a routine part of human biology and are widely found across the general population. Most do not have a direct effect on health and instead reflect natural human diversity. For many genes, carrying a variant associated with a condition indicates a possible link rather than a certain diagnosis, especially when several genes and environmental factors are involved. In some situations, though, a single well studied variant in a particular gene can be enough to confirm a diagnosis.
Are there things that can increase or change my risk?
For CLCF1, risk is mainly set by inheritance: a child is affected when they inherit a changed copy from both parents. Risk is higher when both parents carry a CLCF1 variant, including in families with known cases or where the parents are related by blood. Day-to-day habits are not known to meaningfully change this genetic risk.
Inheritance of CLCF1 variants
Variants in the CLCF1 gene are inherited in an autosomal recessive pattern. This means a child usually needs to inherit one altered copy from each parent to have a CLCF1 related condition. Parents who each carry one variant are typically unaffected, and with each pregnancy there is a 25% chance the child will inherit both altered copies, a 50% chance the child will be a carrier, and a 25% chance the child will inherit neither altered copy. In families asking about CLCF1 gene inheritance, this pattern is the established one.
What does my CLCF1 result mean for my family?
For families with a disease-causing CLCF1 result linked to cold-induced sweating syndrome, parents are often healthy carriers, and brothers or sisters may also be affected or be carriers. Close relatives may also carry the same gene change, especially if there is already a family history of similar symptoms. The family impact depends on whether someone has one changed copy or two changed copies.
Genetic information
Genetic testing
How you find out about variants
To find out about variants in the CLCF1 gene, genetic testing usually analyzes DNA from a blood or saliva sample. A lab reads the gene's code, often as part of a larger gene panel or exome test, and reports whether a variant is present and how clearly it is linked to the condition.
When should I consider getting a genetic test?
Consider testing the CLCF1 gene if a baby or child has signs of cold-induced sweating syndrome, such as severe feeding trouble, muscle stiffness or sudden body tightening, repeated high fevers, or unusual sweating in cool temperatures. Testing can also help if this condition runs in the family or if a child has already been suspected to have it.
A genetic result is only one part of your health story
Genetic test results can be informative, but how much they reveal varies by the condition and the type of variant involved. Over time, the way the body works is also shaped by factors such as age, lifestyle, environment, and medical history. For some conditions, especially those influenced by many genes, genetic information offers context rather than certainty and is best interpreted alongside other parts of care. In other situations, a genetic result may give a clear answer. In areas like medication response, genetic results can also help put individual experiences into context.
Pharmacogenetics
How variants shape your response to medicine
Genetic variation can affect how people respond to medicines. Small differences in genes can change how the body absorbs, breaks down, or responds to a drug, so the same treatment may work better for one person than for another. This kind of variation is common and can influence both how well a medicine helps and how sensitive someone is to side effects.
What is Pharmacogenetics?
Pharmacogenetics focuses on how differences in genes can affect the way someone responds to a medication. By examining links between genes and drugs, it helps explain why the same treatment may work differently in different people. For many medicines, genes influence both how powerful a drug’s effects are and how the body handles it. Understanding this can support treatment choices that are more informed and more tailored to the individual. More detailed information on this topic is available in the LearnHub.
Drugs influenced by the CLCF1 gene
When should I seek medical advice?
There is not yet a broadly confirmed role for this gene in guiding medicine choice or dose, so it makes sense to speak with your doctor about any new symptoms, treatment questions, or medication side effects.