Is your little one getting sick all the time? Not gaining weight? Or are you noticing any changes in their bones? Sometimes, this could be due to Shwachman-Diamond syndrome (SDS), a rare genetic condition that affects children. Let's talk about this in a simple way that you can understand.
What is Shwachman-Diamond syndrome (SDS)?
Simply put, Shwachman-Diamond syndrome (SDS) is a rare genetic disorder that primarily affects the pancreas, bone marrow, and bones in children. It is most often diagnosed before a child is one year old. However, it can sometimes be diagnosed in young adults.
SDS is a challenging disease to diagnose and treat because it can cause a variety of symptoms. A child may have one, several, or all of these symptoms. For example, one child may have problems with the pancreas and bones, while another child may only have problems with the bone marrow and bones.
It is also a very unpredictable disease . Children's symptoms can be mild or severe. These symptoms can change over time. Because children with SDS have a variety of medical problems, many children need the help of a team of specialists . Although children with this condition will need lifelong medical care, they can usually live a normal life. However, some children and young adults can develop a life-threatening blood cancer (Acute Myeloid Leukemia) or a serious blood disorder (Myelodysplasia).
Is this a common condition?
It's hard to say for sure. Doctors consider Shwachman-Diamond syndrome a rare condition. But there are only rough estimates of how many children have the condition. Some estimates put the condition at one in every 75,000 births . The reason for this rough estimate is that children can have mild or severe symptoms, not all children have the same set of symptoms, and there is no single, definitive test to diagnose the condition.
Do adults also get Shwachman-Diamond syndrome (SDS)?
Unlike some childhood medical problems, Shwachman-Diamond syndrome does not go away as children grow older. Symptoms and treatment may change over time, but children with this condition will require lifelong medical care .
How does this condition affect my child's body?
Shwachman-Diamond syndrome can cause a number of medical problems, but there are three main effects:
1. Exocrine pancreatic insufficiency: Your child's pancreas is an organ located behind the stomach. It contains a type of cell called acinar cells. These cells produce enzymes that help digest food. These enzymes break down nutrients and fats in food so that they can be absorbed by the body. In children with SDS, the pancreas does not produce enough of these enzymes. As a result, the child does not get the nutrition they need.
2. Impaired bone marrow function: Your child's bone marrow produces red blood cells, white blood cells, and platelets. In children with SDS, the bone marrow produces fewer of these cells than normal. In particular, it does not produce enough of a type of white blood cell called neutrophils . Neutrophils are cells that normally protect the body from invaders such as bacteria. Some children with SDS do not have enough neutrophils to fight these bacterial invaders. This condition is called neutropenia . Children with neutropenia often develop bacterial infections such as pneumonia, middle ear infections, or skin infections.
3. Skeletal abnormalities: Children with SDS may have conditions such as scoliosis, abnormal shortening of the bones in the arms and legs (chondrodysplasia), or an abnormally narrow, bell-shaped chest (thoracic dystrophy).
What are the complications of Shwachman-Diamond syndrome (SDS)?
People with this condition are at increased risk of developing abnormal blood cells (`(myelodysplasia)`) . These can later develop into a blood cancer called `(acute myeloid leukemia)` .
What are the symptoms of Shwachman-Diamond syndrome (SDS)?
This condition can affect several parts of the child's body. But the most common symptoms involve the pancreas, bone marrow, and skeletal system. Some people may experience symptoms at birth, during infancy, or early childhood. A small number of people may experience symptoms in young adulthood.
Common symptoms:
- Failure to thrive: This means your baby is not gaining weight. In the case of SDS, this may be due to poor digestion.
- Fatigue: A baby who is tired may be irritable and lethargic.
- Large, oily, foul-smelling stools: Your baby's stools may be unusually large, oily in appearance, and have a foul odor.
- Recurrent serious infections: If bacterial infections keep occurring, it may be a symptom of SDS.
- Visible changes in the bones of the arms and legs: Babies' arms and legs may be shorter compared to their torso.
What causes Shwachman-Diamond syndrome (SDS)?
About 90% of children with SDS have a mutation in the `SBDS` gene . Studies have shown that this mutation can be inherited from both parents (`(autosomal recessive manner)`) or from one parent and a new mutation occurs. Researchers still do not know exactly why mutations in the `SBDS` gene cause SDS.
How do doctors diagnose this condition?
Doctors will do a physical exam to assess your child's overall health. They will measure your child's height and weight and compare them to the growth rate of other children their age. They may also do the following tests:
- Complete blood count (CBC) with differential: This counts the child's blood cells, especially all white blood cells.
- Pancreas function tests: Doctors may analyze your child's stool samples or do imaging tests such as computed tomography (CT) scans.
- Blood tests to check vitamin levels.
- X-rays: X-rays may be taken to check for bone problems, especially in the child's hips or legs.
- Genetic testing: To identify the genetic mutations that cause SDS, doctors analyze samples of the child's blood, skin, hair, or tissue to confirm whether the child has the condition.
How is this condition treated?
Shwachman-Diamond syndrome can affect your child in many ways. For example, a child may not be able to digest food due to problems with the pancreas, but their bone marrow may function normally. Symptoms can be mild or severe. Doctors treat these changes based on the severity of the condition.
For pancreatic exocrine insufficiency:
Doctors may prescribe oral pancreatic enzymes or fat-soluble vitamins to help your child's body absorb nutrients and fat.
For bone marrow failure:
Because this condition affects the child's bone marrow, the bone marrow does not produce enough neutrophils. Doctors usually do not treat bone marrow disorders unless the child has serious complications. Treatment may include:
- Blood transfusions: Increases blood cell levels.
- Platelet transfusions: Increases platelet levels to help with bleeding problems.
- Granulocyte-colony stimulating factor (G-CSF) : This treatment increases the number of neutrophils in the child's white blood cells.
- Stem cell transplantation: Some people with SDS develop blood cancers or serious blood disorders. Doctors can treat these conditions with stem cell transplantation.
For skeletal system abnormalities:
Doctors often monitor bone problems caused by SDS. Some children may need orthopedic surgery if they have serious problems.
Who are the medical specialists who treat this condition?
A team of specialists is needed to treat Shwachman-Diamond syndrome. Your child's treatment team may include:
- Pediatricians: These doctors treat newborns, children, and young adults. Your child's pediatrician will likely recommend tests to confirm whether SDS is present.
- Endocrinologists: These are people who have expertise in the endocrine system, which affects a child's development.
- Hematologists: These are people who specialize in blood diseases, including disorders that affect a child's blood cells.
- Gastroenterologists: These doctors can help treat your child's digestive system problems.
- Geneticists: Shwachman-Diamond syndrome is a genetic condition. These doctors, or genetic counselors, will arrange genetic testing to confirm your child's condition. They may also test you and some of your child's blood relatives.
- Orthopedic specialists: If your child has bone problems that require surgery, you will need to see an orthopedic specialist.
Can I prevent this?
Shwachman-Diamond syndrome is an inherited condition . If you know you have the condition, it's a good idea to talk to a geneticist. If you have children with the condition, you may want to consider genetic testing to see if your children have the gene mutation that causes SDS.
Can Shwachman-Diamond syndrome (SDS) be completely cured?
Doctors cannot completely cure this condition. If your child has this condition, he or she will need medical care for the rest of his or her life.
What is it like to live with Shwachman-Diamond syndrome (SDS)?
In a way, Shwachman-Diamond syndrome is a chronic condition . If your child has this condition, he or she will need regular tests and screenings.
- Complete blood count (CBC) and white blood cell count, platelet count: Doctors may perform these tests every three to six months.
- Bone marrow examinations: Hematologists may perform these tests once a year to once every three years.
- Blood tests for vitamins: Doctors may measure the amount of vitamins in a child's blood to see if pancreatic enzyme therapy is working.
- Bone densitometry: Doctors can test bone density before and during puberty.
- X-rays: X-rays may be done to check for problems with your child's hips and knees, especially during periods of rapid growth.
- Developmental assessment: Some children with SDS may have developmental problems, such as attention deficit disorder (ADD). Doctors may assess development every six months from birth to age 6, and growth every six months.
- Neuropsychological testing and assessment: SDS can lead to conditions such as attention deficit disorder (ADD) or pervasive developmental disorder (PDD). Doctors may recommend regular assessments at ages 6-8, 11-13, and 15-17.
How can I help my child cope with this situation?
Children with this condition may have a variety of medical problems. They may need treatments to help them absorb nutrients and fats. They are more likely to get infections. They may also have bone abnormalities that make them look different from others.
Whatever the symptoms, children with this condition may have a common concern – that they are different from others . They may need treatment that keeps them away from school and other activities. Their appearance may change. As your child grows, these changes may make them angry and frustrated. Understanding these feelings can help your child manage their emotions. Some children may benefit from talking to a mental health professional. If you are concerned about how your child is coping with their condition, ask your doctor for recommendations.
When should I see a doctor?
If your child has Shwachman-Diamond syndrome, you should try to be aware of changes in your child's body . The symptoms of SDS often change over time. In some cases, these changes can be signs of serious complications, including blood cancer.
Children's bodies are constantly changing as they go through infancy, childhood, adolescence (especially adolescence and puberty), and young adulthood. These changes are not always a sign of a new illness or a more serious condition.
Your child will have regular doctor appointments. Those regular appointments are the best time for you to ask questions about changes that could be signs of a serious problem.
What questions should I ask my doctor?
Shwachman-Diamond syndrome is a rare condition. You may not even know you have it. Here are some questions you can ask your doctor:
- Why does my child have this condition?
- Does he have a mild form of this condition or a severe form?
- How does this condition affect my child?
- What are the treatments?
- Will my child's symptoms get worse?
- Do my child's other siblings need to be tested for genetics?
- Do I and the child's other biological parent need to undergo genetic testing?
- How can I help my child manage treatment?
Finally, the most important thing (Take-Home Message)
Shwachman-Diamond syndrome is a rare, inherited condition that affects children's growth, susceptibility to bacterial infections, and bone abnormalities. While some children have mild symptoms, all children with the condition will need lifelong medical care. If your child has Shwachman-Diamond syndrome, you may feel overwhelmed by the uncertainty of what the future holds. If you are in this situation, share your concerns with your child's doctors. They understand what it's like to worry about and care for a child with a serious, sometimes unexpected illness. They can help your child not only cope with the illness, but also help them live well. And they're happy to help you help your child. Never feel alone, and ask for help.
` Shwachman-Diamond syndrome, SDS, genetic abnormalities, pancreas, bone marrow, bone abnormalities, pediatric diseases, neutropenia
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