Spermatogenic failure 37 is a genetic cause of male infertility that affects how sperm are made. Many living with spermatogenic failure 37 do not notice day-to-day illness, but they may learn about it when pregnancy does not happen after trying to conceive. It may help to know that doctors have studied this condition for decades, and early symptoms of spermatogenic failure 37 are often absent until fertility testing is done in adulthood. Spermatogenic failure 37 is usually a lifelong condition, it is not generally life-threatening, and the outlook for overall health is often good. Treatment focuses on fertility care, which may include specialist evaluation, assisted reproductive methods, and genetic counseling.
How many people live with Spermatogenic failure 37?
Spermatogenic failure 37 is so rare that no reliable estimate is available for how many people are living with it worldwide or in the United States. It is not counted separately in major public health reports, and medical papers describe only a very small number of families with this condition rather than a reliable total number.
Overview
Spermatogenic failure 37Symptoms
Spermatogenic failure 37 often has no obvious symptoms in daily life. Many people learn they have it during infertility testing, when semen shows very low sperm counts or no sperm. Other body features are usually normal.
Outlook and prognosis
For many living with spermatogenic failure 37, the main long-term issue is reduced sperm production and infertility. General health is usually not affected. Some may still father children with fertility treatment, and outcomes can vary.
Causes and risk factors
Spermatogenic failure 37 is caused by a change in the SYCP2 gene, usually inherited in an autosomal dominant pattern, though some cases are new. Family history is the main risk factor; lifestyle or environmental factors may affect fertility but do not cause this gene change.
Genetic influences
Genetics are very important in spermatogenic failure 37, because harmful changes in a specific gene are the main known cause. These genetic variations can run in families or appear for the first time in one person.
Diagnosis
Diagnosis of spermatogenic failure 37 usually starts with infertility evaluation, semen testing, hormone blood tests, and an exam. The genetic diagnosis of spermatogenic failure 37 is confirmed with genetic tests, sometimes along with testicular tissue findings.
Treatment and drugs
Spermatogenic failure 37 is usually managed with fertility care rather than medicines that restart sperm production. Depending on results, treatment may include hormone therapy, surgical sperm retrieval with IVF or ICSI, and counseling about donor sperm.
Symptoms
Spermatogenic failure 37 usually comes to light when pregnancy is not happening despite regular sex without birth control. Many living with this condition feel completely well day to day, because the main problem is reduced or absent sperm production rather than pain or visible illness. The early features of Spermatogenic failure 37 are often picked up during a fertility evaluation, especially on semen testing.
The most common sign is difficulty starting a pregnancy with a partner. People with Spermatogenic failure 37 often learn about it only after months of trying to conceive.
Semen testing may show a very low sperm count or no sperm in the semen at all. In everyday life, this usually does not cause discomfort, so it can be easy to miss until fertility testing is done.
Many people with Spermatogenic failure 37 have normal growth, puberty, sex drive, and erections. That means there may be no obvious physical clues outside of fertility problems.
Doctors may find abnormal semen analysis results even when someone otherwise feels healthy. Hormone levels and testicle size can vary, so these findings are not the same in everyone.
How people usually first notice Spermatogenic failure 37?
For many people with spermatogenic failure 37, the condition is first noticed not in childhood but later on, when pregnancy does not happen after months of trying to conceive and a fertility evaluation begins. The first signs of spermatogenic failure 37 are usually found on semen testing, which may show very low sperm counts or no sperm at all, even though day-to-day health, puberty, sexual function, and body development may seem typical. In many living with this condition, doctors first suspect it during an infertility workup and then confirm the cause with genetic testing, because there are often no obvious warning signs beforehand.
Types of Spermatogenic failure 37
Spermatogenic failure 37 is a genetic form of male infertility, but no distinct variants or subtypes are widely recognized within this specific condition. In practice, people with spermatogenic failure 37 may still have differences in severity, such as very low sperm production or no sperm seen in semen, yet these are differences in how the condition shows up rather than accepted disease types. At this point, the main medically recognized category is spermatogenic failure 37 itself, rather than separate types of Spermatogenic failure 37.
Can I slow down the onset of symptoms?
Probably not in a meaningful way. Spermatogenic failure 37 is a genetic cause of very low or absent sperm production, so healthy habits like not smoking, limiting alcohol, keeping a healthy weight, and avoiding repeated heat or harmful chemical exposure may support overall fertility but have not been shown to delay or prevent this condition itself. Early care with a fertility specialist and genetic counselor can help you understand testing and family-building options, and while that may not change when the condition starts, it can help you plan sooner.
What genetics can tell you about symptoms
In spermatogenic failure 37, genetics can help explain why sperm production does not develop normally, but they usually do not predict many day-to-day symptoms because most people living with this condition otherwise feel well and learn about it during an infertility evaluation. Genetic differences may influence how severe the sperm production problem is, such as very low sperm counts or no sperm in the semen, but the condition mainly affects fertility rather than causing a broad pattern of physical symptoms. Genetics can confirm the underlying cause, yet they are less useful for predicting exactly when it will be noticed, since many find out only when trying to have a child.
Causes and risk factors
Many people only learn about spermatogenic failure 37 when pregnancy does not happen as expected. Spermatogenic failure 37 is one of the genetic causes of male infertility. It happens because a harmful gene change, inherited or new, disrupts sperm production in the testicles. Family history can be one part of the story, but lifestyle and environment can still shape how strongly fertility is affected. Hormone problems, smoking, heavy alcohol use, long heat exposure, some medicines, and toxins do not usually cause this condition, but they can further lower sperm count or worsen infertility.
What are the most common causes or risk factors?
Spermatogenic failure 37 is mainly caused by a harmful change in a gene that the testicles need for normal sperm production, so the biggest risk factor is inheriting that change or having a family history of severe male infertility. This specific condition is not usually caused by lifestyle habits alone, but other common fertility risks, such as hormone problems, an undescended testicle, past infection, smoking, heavy alcohol use, certain medicines, chemotherapy or radiation, and regular heat or toxin exposure, can also make sperm problems worse.
Environmental and biological risk factors
For spermatogenic failure 37, there are no well-established environmental or non-genetic biological factors that are known to increase the chance of this specific condition. Awareness of both biological and environmental influences helps you feel prepared, but current evidence suggests that the main risk factors for spermatogenic failure 37 are not in these categories. In practical terms, doctors do not usually point to exposures, age, or other body-based factors as confirmed causes of this subtype.
No clear environmental risks or non-genetic biological risk factors have been confirmed for spermatogenic failure 37. Research on this rare subtype is still limited, so guidance may change if stronger evidence becomes available.
Genetic risk factors
For many living with spermatogenic failure 37, the risk begins in genes that help the testes make sperm. When people ask about the genetic causes of spermatogenic failure 37, the main concern is a harmful change in the gene linked to this condition. Some risk factors are inherited through our genes. It is one of the genetic causes of male infertility, and family history may offer clues even if the pattern is not obvious at first.
Gene change: This condition happens because of a harmful change in the gene tied to spermatogenic failure 37. When that gene does not work as it should, sperm development can stall or fail.
Inherited risk: The gene change is present from birth and may be passed through a family. Some people only learn about it after fertility testing points to an inherited cause rather than a blockage or another non-genetic problem.
Family history: Having close male relatives with unexplained infertility, very low sperm counts, or no sperm in the semen can make a genetic explanation more likely. A clear family pattern is not always seen, because some relatives may never have been tested or may have milder effects.
Lifestyle risk factors
With spermatogenic failure 37, lifestyle habits do not cause the underlying condition, but they can influence how much sperm production is preserved and how fertility treatment may go. In practice, how lifestyle affects spermatogenic failure 37 often matters most for semen quality, hormonal balance, sexual health, and chances of conception. The main modifiable factors are body weight, diet quality, physical activity, heat exposure, substance use, and sleep and stress patterns.
Excess body fat can worsen hormonal imbalance and may further impair sperm production in men with spermatogenic failure 37. Reaching and maintaining a healthier weight may support testosterone levels and improve the chances of retrieving usable sperm.
A diet low in fruits, vegetables, legumes, fish, and other nutrient-dense foods may reduce intake of antioxidants and key micronutrients needed for sperm cell function. For lifestyle risk factors for spermatogenic failure 37, poor overall diet is most relevant because it may add oxidative stress and worsen semen quality.
Regular moderate exercise may help insulin sensitivity, circulation, weight control, and hormone regulation, which can support reproductive health in this condition. Very intense overtraining, especially when paired with low energy intake, may lower testosterone and work against fertility goals.
Frequent hot tubs, saunas, heated car seats, or prolonged laptop heat on the lap can raise scrotal temperature and may further suppress sperm production. Reducing repeated heat exposure may help protect whatever spermatogenic function remains.
Risk prevention
For many living with spermatogenic failure 37, there is usually no proven way to prevent the underlying condition itself because it is linked to a genetic change that affects sperm production. Prevention, in this setting, is more about protecting fertility as much as possible, avoiding added harm to the testes, and getting timely care. Different people need different prevention strategies—there’s no single formula. Early evaluation can also help if there are signs such as trouble conceiving or other early symptoms of spermatogenic failure 37.
Genetic counseling cannot reverse spermatogenic failure 37, but it can help you understand what the diagnosis means for fertility and family planning. It may also help couples discuss testing, treatment choices, and the chance of passing related genetic changes to children.
Repeated high heat to the testicles can further lower sperm production in people with spermatogenic failure 37. Limiting hot tubs, saunas, and prolonged heat exposure from laptops or similar sources may help protect the sperm production that is present.
Injury to the testicles can add another layer of damage on top of spermatogenic failure 37. Wearing athletic protection during contact sports and getting prompt care for testicular pain, swelling, or trauma can help reduce preventable harm.
Some medicines, testosterone products, anabolic steroids, chemotherapy, and radiation can further suppress sperm production in people with spermatogenic failure 37. Talk to your doctor about which preventive steps are right for you.
Can you prevent Spermatogenic failure 37?
No, there is no proven way to prevent spermatogenic failure 37, because it is a genetic condition that affects how the body makes sperm. Healthy habits such as not smoking, limiting alcohol, avoiding anabolic steroids, and reducing exposure to high heat or harmful chemicals can support sperm health in general, but they cannot prevent this inherited form. If this condition may run in your family, talking with a doctor or genetics specialist can help you understand the risk and your options.
Transmission
Spermatogenic failure 37 is not an infection, so it cannot be caught or passed from one person to another through sex, kissing, blood, food, or everyday contact. Instead, it is a genetic condition linked to a change in a gene involved in making sperm.
In some families, that gene change can be passed from parent to child, while in others it may appear for the first time as a new genetic change. Because Spermatogenic failure 37 often affects fertility, natural parent-to-child passing may be less common, and genetic counseling can help explain how Spermatogenic failure 37 is inherited in your family.
When to test your genes
Consider genetic testing if you have infertility with very low sperm counts or no sperm on repeated semen tests, especially if there is a family history of infertility or you are planning IVF or ICSI. Testing can help confirm the cause, guide treatment choices, and clarify risks for relatives or future children.
Diagnosis
Spermatogenic failure 37 is usually investigated when semen tests show very low sperm counts or no sperm, often during an infertility workup. The diagnosis is based on the pattern of male infertility, a physical exam, and tests to look for hormonal, structural, and genetic causes. It’s natural to worry when symptoms don’t have a clear explanation, and some diagnoses are clear after a single visit, while others take more time.
Doctors usually begin with semen testing, often repeated on two separate samples to confirm the result. In many people with spermatogenic failure 37, the main finding is severely reduced sperm production or no sperm seen in the semen.
A detailed family and health history can help show whether infertility may be linked to a hereditary condition. Doctors ask about puberty, prior fertility, childhood testicular problems, infections, heat exposure, medications, and any relatives with infertility.
The exam looks for clues such as testicular size, varicoceles, or signs of hormone imbalance. These findings cannot confirm spermatogenic failure 37 on their own, but they help guide the diagnosis of spermatogenic failure 37 and rule out more common causes.
Blood tests usually check testosterone and hormones that control sperm production, especially follicle-stimulating hormone and luteinizing hormone. This can show whether the testes are not making sperm properly or whether the problem may be coming from hormone signaling.
How is Spermatogenic failure 37 diagnosed?
Spermatogenic failure 37 is usually diagnosed during an infertility workup, when repeated semen tests show a very low sperm count or no sperm, and a doctor also reviews medical history, does an exam, and checks hormone levels with blood tests to rule out other causes. In some cases, an ultrasound or a small sample of tissue from the testicle may be used to see how well sperm is being made. Because this is a genetic form of male infertility, genetic testing can help confirm the diagnosis, but it is usually one part of the full evaluation rather than the only test.
Stages of Spermatogenic failure 37
Spermatogenic failure 37 does not have defined progression stages. This is because it is usually identified as a cause of infertility rather than a condition that moves through clear step-by-step phases over time. Doctors usually start with a conversation about fertility history, followed by a semen test to look at sperm production and other possible causes of male infertility. If the findings suggest a genetic cause, blood tests and sometimes genetic testing may be used to help confirm the diagnosis of spermatogenic failure 37.
Outlook and prognosis
The outlook for people with spermatogenic failure 37 is generally good for overall health, because the condition mainly affects fertility rather than life expectancy or other organ systems. Most affected men have persistent severe oligozoospermia or azoospermia, so natural conception is often difficult or impossible, but some may still father biological children through assisted reproductive techniques if viable sperm can be retrieved. The degree of infertility can vary, and repeated semen analyses and specialist evaluation are usually needed to clarify the chances of sperm retrieval and treatment success. There is no evidence that spermatogenic failure 37 itself increases mortality. The main long-term impact is psychosocial and reproductive, so counseling and reproductive planning are important parts of care.
Long-term effects
For many living with spermatogenic failure 37, the long-term picture centers on fertility rather than day-to-day general health. This condition usually causes ongoing problems with sperm production, so the main lasting effect is difficulty fathering a biological child. Long-term effects vary widely, but in the limited reports available, the reproductive impact is often the clearest feature.
The main long-term effect of spermatogenic failure 37 is persistent reduced fertility or infertility. Many people continue to have very low sperm counts or no sperm seen in semen over time.
This condition can lead to severe problems making mature sperm, which may show up as azoospermia or severe oligospermia on repeated testing. In many living with spermatogenic failure 37, this tends to be a lasting feature rather than a temporary change.
For many, the long-term impact becomes most noticeable when trying to conceive, sometimes after the early symptoms of male infertility due to spermatogenic failure 37 were not obvious before. Some may need fertility evaluation because natural conception can be difficult or may not happen.
Based on what is known so far, the long-term effects of spermatogenic failure 37 are mainly related to reproduction. Not every long-term effect means broader health problems, and other body systems are not usually reported as being affected.
How is it to live with Spermatogenic failure 37?
Living with spermatogenic failure 37 usually does not cause pain or change how your body feels day to day, so many people only learn about it when a fertility evaluation shows very low sperm production or no sperm in the semen. In daily life, the biggest impact is often emotional rather than physical, because trying to build a family can become stressful, uncertain, and time-consuming, with repeated medical visits and decisions about options such as assisted reproduction or donor sperm. This can affect partners and loved ones too, sometimes bringing grief, pressure, or difficult conversations, but clear information, fertility counseling, and emotional support can help many families move through it with more confidence and less isolation.
Treatment and drugs
Spermatogenic failure 37 is treated based on the cause and on whether any sperm can still be found, but there is often no medicine that can fully restore sperm production when the problem is genetic. Doctors may treat related hormone problems if they are present, and they will also look for other factors that can worsen fertility, such as certain medications, heat exposure, smoking, or heavy alcohol use. For many people, treatment begins with small daily steps, but fertility care often also involves seeing a specialist to discuss options such as finding sperm directly from the testicle for use with in vitro fertilization, often with a method called ICSI, where a single sperm is injected into an egg. If no usable sperm can be found, some people with spermatogenic failure 37 consider donor sperm or other family-building options. Genetic counseling can also help many living with spermatogenic failure 37 understand what the diagnosis means for fertility, testing, and future planning.
Can you cure Spermatogenic failure 37?
No, there is no cure for spermatogenic failure 37 at this time. Because it is a genetic condition that affects how the testicles make sperm, treatment usually cannot fix the underlying cause, but doctors can check for other treatable problems and help manage fertility concerns. For many living with this condition, care focuses on support and family-building options, such as working with a fertility specialist to discuss assisted reproduction or donor sperm.
Non-drug treatment
For many living with spermatogenic failure 37, day-to-day concerns often center on fertility planning rather than physical symptoms. Non-drug treatment usually focuses on finding the cause, improving anything that may still be changeable, and exploring ways to build a family if natural conception is not happening. Not every approach works the same way, because sperm production can range from very low to completely absent. In many cases, the most helpful care comes from a fertility specialist, a genetics team, and emotional support working together.
Regular care with a reproductive urologist or fertility specialist can help confirm how much sperm production is present and whether it changes over time. This often includes repeat semen testing and checking for treatable factors that can make fertility worse.
Genetic counseling can help you understand what spermatogenic failure 37 may mean for fertility and for future children. It also helps couples talk through testing, inheritance, and realistic family-building options in a clear way.
Although making changes can feel daunting, avoiding tobacco, anabolic steroids, excess alcohol, and overheating of the testes may help protect any remaining sperm production. Keeping a healthy weight, staying active, and limiting exposure to workplace toxins can also support overall reproductive health.
If an enlarged vein around the testicle, called a varicocele, is present, surgery may sometimes improve semen results in selected people. This does not help everyone, but it can be worth discussing when doctors find a clear repairable problem alongside spermatogenic failure 37.
Your genes may have an impact on how drugs work for you
For many living with spermatogenic failure 37, treatment is usually focused on finding the cause of low or absent sperm and discussing options such as hormone treatment when it is appropriate or fertility procedures, rather than using a medicine that directly fixes the problem. In this condition, the inherited change is mainly important because it affects sperm production itself, and there is no well-established evidence that it clearly changes how most commonly used fertility medicines work. That means genetic testing is often more helpful for explaining the reason for infertility and guiding family planning than for choosing one medication over another.
Pharmacological treatments
For many living with spermatogenic failure 37, there is no medicine proven to fix the underlying genetic cause or reliably restore sperm production. Treatment is usually individualized after hormone testing and a semen analysis, because some drugs can help only in certain hormone patterns rather than in the genetic condition itself. Medication can feel like a big step, but in this setting it is often used to support related hormone problems instead of acting as a direct treatment for genetic male infertility.
There is currently no established medication that specifically treats spermatogenic failure 37 itself. In most cases, medicines cannot reverse the genetic problem causing very low or absent sperm production.
Human chorionic gonadotropin, often called hCG, and follicle-stimulating hormone such as follitropin alfa or menotropins may be used if testing shows a hormone-signal problem. These drugs are more helpful in men with hypogonadotropic hypogonadism and usually do not work well when spermatogenic failure 37 reflects primary testicular failure.
Clomiphene citrate, and sometimes enclomiphene where available, may be prescribed off-label to raise the body's own testosterone and gonadotropin levels. Not everyone responds to the same medication in the same way, and benefit is less likely if the testes cannot make sperm because of the underlying genetic change.
Anastrozole or letrozole may be considered in selected men who have low testosterone with relatively high estrogen levels. These medicines can improve hormone balance in some forms of male infertility, but they are not a proven treatment for spermatogenic failure 37.
Genetic influences
When pregnancy is not happening and semen testing shows very few or no sperm, spermatogenic failure 37 points to a fertility problem that begins at the gene level. This named subtype is a single-gene form of infertility and, in reported families, it has been inherited in an autosomal recessive pattern, so the affected man received one altered copy from each parent. Those gene changes interfere with the testis’s ability to make mature sperm, which can lead to severely reduced sperm counts or no sperm in the semen.
Understanding whether a condition is inherited can guide next steps. For many living with spermatogenic failure 37, genetic testing can help confirm the diagnosis and give clearer information about whether close relatives may also carry the same gene change.
Is Spermatogenic failure 37 genetic?
Genetics are very important in spermatogenic failure 37, because harmful changes in a specific gene are the main known cause. These genetic variations can run in families or appear for the first time in one person.
Having a genetic risk is not necessarily a diagnosis
Genetic variants are a usual part of being human, and they are common across the general population. Most of these variants do not directly affect health and are simply part of normal human diversity. For many genes, having a variant associated with a condition suggests a possible link rather than a definite diagnosis, especially when more than one gene and environmental factors are involved. In some situations, though, a single well-characterized variant in a specific gene is enough to confirm a diagnosis.
Pharmacogenetics—how genetics influence drug effects
For many living with spermatogenic failure 37, the main role of genetics is not to point to a special medicine, but to explain why sperm production is severely reduced or absent in the first place. In most cases, a gene change causing spermatogenic failure 37 cannot be reversed with drugs, so treatment often focuses on finding any sperm that may still be present, using assisted reproduction, and planning care based on the genetic result. Beyond trial and error, genetics offers another way to judge whether hormone treatment is likely to help, since some people benefit only if they also have a hormone problem and not just a genetic block in sperm production. This can matter in everyday life: someone may spend months on supplements or fertility medicines, only to learn that the underlying genetic cause makes those treatments unlikely to restore sperm production. Genetic testing may also help estimate the chances of surgical sperm retrieval and can guide discussions about IVF with ICSI if sperm is found. Because the genetic change may be passed to children, doctors often recommend genetic counseling as part of treatment planning for spermatogenic failure 37.
Interactions with other conditions
Spermatogenic failure 37 mainly affects fertility, but it can become especially important when it appears alongside other causes of trouble conceiving. If someone also has a varicocele, a hormone disorder, a past testicular injury, or a blockage in the reproductive tract, it may be harder to sort out how much each issue is contributing to a very low sperm count or no sperm in the semen. Doctors call it a comorbidity when two conditions occur together, and in this setting that can affect testing, treatment choices, and the chances of finding usable sperm for assisted reproduction. Some men with spermatogenic failure 37 may also be evaluated for broader genetic conditions linked with infertility, because related chromosome or gene changes can influence family planning and the health of future children. In day-to-day care, the biggest interaction is often with other reproductive or hormone problems rather than with common illnesses like diabetes or high blood pressure, although those conditions can still affect overall health and fertility treatment plans. If early symptoms of spermatogenic failure 37 are found during an infertility workup, doctors usually look for any overlapping condition so care can be better tailored.
How genes can cause diseases
Humans have more than 20,000 genes, each carrying out one or a few specific functions in the body. One gene instructs the body to digest lactose from milk, another tells the body how to build strong bones and another prevents the body's cells from beginning to multiply uncontrollably and developing into cancer. As all of these genes combined are the building instructions for our body, a defect in one of these genes can have severe health consequences.
Through decades of genetic research, we know the genetic code of any healthy/functional human gene. We have also identified that in certain positions on a gene, some individuals may have a different genetic letter from the one you have. We call these hotspots "Genetic Variations" or "Variants" in short. In many cases, studies have been able to show that having the genetic letter "G" in the position makes you healthy, but having the letter "A" in the same position disrupts the gene function and causes a disease. Genopedia allows you to view these variants in genes and summarizes all that we know from scientific research, which genetic letters (Genotype) have good or bad consequences on your health or on your traits.
What other conditions can cause similar symptoms to Spermatogenic failure 37?
Other problems can look very similar to spermatogenic failure 37 because they also lead to very low sperm counts or no sperm, making it hard to start a pregnancy. Common examples include enlarged veins around a testicle, hormone problems that affect sperm making, blocked sperm tubes, past infections or injury to the testicles, and other inherited causes of male infertility such as Klinefelter syndrome or changes on the Y chromosome. Because the symptoms often overlap, doctors usually need a semen test, hormone testing, and sometimes genetic testing to tell the cause apart.
History
For many people, the story begins not with obvious illness, but with the stress of trying to have a baby and not knowing why it is not happening. Spermatogenic failure 37 entered medicine through this very real, day-to-day problem: unexplained male infertility, often in men who otherwise feel healthy and have no clear warning signs.
In recent decades, awareness has grown as doctors moved from describing infertility only by semen test results to identifying more specific causes behind very low sperm counts or no sperm in the semen. What is now called spermatogenic failure 37 was recognized as part of that shift. Earlier generations of care could usually say that sperm production was severely reduced, but they often could not explain why. As laboratory methods improved, specialists became better at separating different forms of male infertility and recognizing that some cases reflected a problem in how sperm are made inside the testes.
That change mattered for families. Instead of hearing only broad terms like “male factor infertility,” many living with spermatogenic failure 37 can now get a more precise explanation after fertility testing, hormone tests, and sometimes tissue studies or genetic evaluation. Not every early description was complete, and older reports often grouped several conditions together, but over time the picture became clearer.
Today, spermatogenic failure 37 is understood as one of a number of rare, specific causes of severely impaired sperm production. Researchers later identified a genetic cause for this form, which helped confirm that it was a distinct medical condition rather than just a vague label for infertility. Knowing this history helps explain why diagnosis may still take time: the early symptoms of spermatogenic failure 37 are often subtle, and for many people the first clue is difficulty conceiving rather than pain or visible changes.