Dr. Scott McLean
Clinical Genetics
San Antonio, TX
37 years experience male
Locations
Children's Hospital of San Antonio
San Antonio, TX
Phone
Practice website
Insurances accepted
Medicaid
Medicare
Cigna
Tricare
UnitedHealthcare
Blue Cross Blue Shield of Texas
Aetna
About
Bio
Clinical Geneticist at Children's Hospital of San Antonio, on the faculty at Baylor College of Medicine, where I am an Associate Professor of Pediatrics and an Associate professor of Human and Molecular Genetics.
SpecialtiesDoctors may have more than one area of specialty interest. Board certification in a specialty area means the doctor has completed formal training and has practice experience in that specialty, and has passed the certification examination from the corresponding accredited medical specialty board.
Doctors may have more than one area of specialty interest. Board certification in a specialty area means the doctor has completed formal training and has practice experience in that specialty, and has passed the certification examination from the corresponding accredited medical specialty board.
Clinical Genetics
Languages spoken
English
Doctor Q&A
80 Answers
24 Agrees
The number of answers this doctor has agreed with.
A 42-year-old member asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
Nothing: Sickle cell disease causes anemia, pain crises, susceptibility to certain infections, and more. It's a recessive condition, which means you have to in... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.5k viewsReviewed >2 years ago
A 32-year-old member asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
A man: Xxy is shorthand for the arrangement of chromosomes in klinefelter syndrome. These men are generally well - they have all of their man parts - but can... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.8k viewsReviewed >2 years ago
A 32-year-old member asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
Look at this picture: An epicanthal fold is a skin fold from your upper eyelid that slightly covers the inside corner of your eye. Here is a good link: http://www.Nationwid... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.9k viewsReviewed >2 years ago
A 39-year-old member asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
It varies: Signs of neurofibromatosis type 1 (nf1) can appear before birth or may not be apparent until well into adulthood. Cafe-au-lait (that's french for coff... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.9k viewsReviewed >2 years ago
A 28-year-old member asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
It depends: It depends on the details of the family history. Tourette's is inherited in a complicated way that we don't completely understand, but we know that i... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6k viewsReviewed >2 years ago
A 29-year-old member asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
Sometimes: Pallister-killian syndrome is a rare genetic condition caused by a chromosomal rearrangement that may cause birth defects, like cleft palate. Children... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6k viewsReviewed >2 years ago
A 43-year-old member asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
They grow up!: Boys and girls with fragile x syndrome grow up to be men and women with fragile x syndrome: loved and loving people with full lives. Like many adults... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.9k viewsReviewed >2 years ago
A 34-year-old member asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
A few possibilities: Your primary care phsyician - internist, family practitioner, ob/gyn - should be your first stop. Do the basics - a good history and review of systems... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.5k viewsAnswered >2 years ago
A 39-year-old member asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
Nope: Aniridia, complete or partial absence of the iris, can be an isolated birth defect or part of a bigger condition, like WAGR syndrome (http://www.Wagr.... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.7k viewsReviewed >2 years ago
A 30-year-old member asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
Uncooked shellfish +: For each type of hemochromatosis (there are at least 3 types!), avoid uncooked fish shellfish from the ocean because you risk becoming ill (even fatal... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.7k viewsAnswered >2 years ago
A 45-year-old member asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
I'm not sure!: I am just not sure what the "integrated test" is. And this is not a criticism of you at all. The words in medicine and especially in genetics are craz... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.9k viewsReviewed >2 years ago
A 34-year-old member asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
Genetic tests help: But tests alone will not confirm the diagnosis in 1 out of 10 children with angelman syndrome. Common signs are very delayed development, speech impai... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6k viewsReviewed >2 years ago
A 45-year-old member asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
1, 6, and 19: Msud is caused when a tightly clustered group of proteins [branched-chain ketoacid dehydrogenase] does not work properly. This multienzyme complex has... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.8k viewsReviewed >2 years ago
A 42-year-old member asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
It depends: It depends on why the birth defect occured in the first place - some causes are environmental, like if mom was drinking during early pregnancy, and ot... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.9k viewsAnswered >2 years ago
A 48-year-old member asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
Yes: Osteogenesis imperfecta, or oi for short, is caused by genetic mutations of certain collagen genes. There are a number of types, and the severity can ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.5k viewsReviewed >2 years ago
A member asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
Excellent question: Huntington disease is a serious condition - genetic testing can be extremely helpful. Good information is here: http://www.hdsa.org/. No test is perfe... Read More
Created for people with ongoing healthcare needs but benefits everyone.
3.7k viewsReviewed >2 years ago
A 57-year-old female asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
Tough situation: My guess is that this will require a careful look at the overall health status, current meds, and neurological examination. Adults with ds do sometime... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.3k viewsReviewed >2 years ago
A 33-year-old member asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
Your doc should know: Most newborns are screened for dozens of genetic conditions immediately after birth. Some of theses conditions involve problems with fatty acid oxidat... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6k viewsReviewed >2 years ago
A 36-year-old member asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
Single gene disorder: Neurofibromatosis type 1 is caused by a mutation of the nf1 gene on chromosome 17. This gene normally allows your cells to make a protein called neuro... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.9k viewsReviewed >2 years ago
A 39-year-old member asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
Yes, but carefully: Acute intermittent porpyria, or aip for short, is caused by low levels of the hmbs enzyme. Symptoms include episodes of severe abdominal pain, seizure... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.3k viewsAnswered >2 years ago
A 54-year-old female asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
No, I don't think so: Even when we have medical reasons to be slow metabolizers of the ethanol we might enjoy, a high blood alcohol level or a high breathalyzer reading mea... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.2k viewsReviewed >2 years ago
A 32-year-old female asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
Good idea: Men with 47 chromosomes - 22 regular pairs plus 2 xs and a y - have klinefelter syndrome. You can get good information on the internet at the genetics... Read More
Created for people with ongoing healthcare needs but benefits everyone.
4.8k viewsReviewed >2 years ago
A 45-year-old member asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
Not sure: Msud is typically diagnosed shortly after birth or before age 1. Frankly I am skeptical of a diagnosis in an adult and suggest you return to the docto... Read More
Created for people with ongoing healthcare needs but benefits everyone.
4.7k viewsReviewed >2 years ago
A 33-year-old member asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
Yes: It's very unusual for someone to inherit two mutations - one for each of their huntington disease genes, but it's possible. A person with homozygosity... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.7k viewsReviewed >2 years ago
A 33-year-old member asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
Yes, this is true: Diabetes that is not treated properly can cause problems with your eyes, heart, and kidneys. If you are pregnant and you have diabetes that is not und... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.5k viewsReviewed >2 years ago
A 23-year-old female asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
Probably not much: Neurofibromatosis type 1 is a condition where you can develop many skin bumps - neurofibromas - over time. Stress is less a factor than hormones - pub... Read More
Created for people with ongoing healthcare needs but benefits everyone.
4.1k viewsReviewed >2 years ago
A 40-year-old female asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
No: The 5,10-methylenetetrahydrofolate reductase (MTHFR) enzyme, when it is not present at all, causes seizures and intellectual disability. This is very ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
1.5k viewsReviewed >2 years ago
A 27-year-old female asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
Not sure: A lot depends on the situation for which the test was done and what is meant by "variant." mutations of this gene, when inherited from both parents, c... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.2k viewsAnswered >2 years ago
A 39-year-old member asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
It's quite possible: We often think of genetic disease as causing birth defects or problems with early childhood development, but in fact genetic conditions can become app... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5k viewsReviewed >2 years ago
A 32-year-old member asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
Ask: Your physician may be able to point you in the right direction. You can also find a genetic counselor at the national society of genetic counselors we... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.6k viewsAnswered >2 years ago
A 40-year-old female asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
Unlikely: Familial cardiomyopathy does not cause miscarriages. However, recurring pregnancy losses may have a genetic cause and should be evaluated, probably by... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.6k viewsReviewed >2 years ago
A 19-year-old female asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
Milky mixed drinks: There are 3 kinds of galactosemia, gal-1-put deficiency is most common and is considered "classic". This can cause liver damage (and worse) if you eat... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.5k viewsAnswered >2 years ago
A 27-year-old female asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
Low, probably: If your granddad had hereditary hemochromatosis caused by homozygous mutations of the hfe gene, then your father has at least one mutation. Your mom m... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.3k viewsReviewed >2 years ago
A 37-year-old female asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
Yellow skin: Yellow skin and eyes (jaundice), dark urine, feeling tired, shortness of breath. Glucose-6-phosphate dehydrogenase (g6pd) deficiency is caused by a mu... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6k viewsReviewed >2 years ago
A 43-year-old member asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
This is complicated.: It's complicated because full trisomy 16 is 99.9% fatal before birth. Newborns with partial trisomy 16 may live - most have multiple birth defects and... Read More
Created for people with ongoing healthcare needs but benefits everyone.
2.8k viewsAnswered >2 years ago
A 31-year-old male asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
See the CDC webpage: http://www.cdc.gov/ncbddd/birthdefects/index.html is the centers for disease control webpage for birth defects, where you will find excellent epidemio... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6k viewsReviewed >2 years ago
A 33-year-old member asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
About 1 in 10: If you look at all close relatives of people with crohn's disease, about 1 in 10 will also have crohn's disease. Many other autoimmune conditions have... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.9k viewsReviewed >2 years ago
A 28-year-old female asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
It depends: The "turn around time" for a genetic test result depends on the test, the lab, where you live, the weather, and the system through which the specimen ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.9k viewsReviewed >2 years ago
A 34-year-old member asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
It depends: Women with Down syndrome can get pregnant, and often their pregnancies are complicated. If the Down syndrome in the mother is caused by one extra chro... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.9k viewsReviewed >2 years ago
A 43-year-old member asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
Vegetables are OK: Phenylketonuria is treated with a low phenylalanine diet, which means most proteins are verbotten. But people with pku need expert guidance from a met... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.8k viewsReviewed >2 years ago
A 59-year-old male asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
Are you well?: Most folks with two mutations of the hereditary hemochromatosis gene do not get sick at all, even though many have high levels of ferritin and transfe... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.5k viewsAnswered >2 years ago
A 32-year-old member asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
Pulmonary Medicine: Inherited emphysema may be caused by any one of several dozen different genetic conditions. Alpha-1 antitrypsin deficiency is one well known cause: ht... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6k viewsReviewed >2 years ago
A 31-year-old member asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
No. You are safe.: People with huntington disease (hd) have inherited a genetic mutation in a specific gene right at the tip of one of their 4th chromosomes. They can't ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.7k viewsReviewed >2 years ago
A member asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
Unfortunately, no.: Pallister-killian syndrome is a rare condition where some cells in the body have an unusual, extra chromosome (mosiac isochromosome 12p). This abnorma... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6k viewsReviewed >2 years ago
A 40-year-old member asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
Possibly, not likely: Infections are the most common reasons, especially chlamydia and gonorrhea, which are sexually transmitted diseases (stds). There are very good tests ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6k viewsReviewed >2 years ago
A 31-year-old member asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
Many things: 3 of every 100 babies born have a serious malformation that will require surgery or will have a major impact on their lives. Much of this risk can't b... Read More
Created for people with ongoing healthcare needs but benefits everyone.
6k viewsReviewed >2 years ago
A 31-year-old member asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
Not rare at all: Flexibility of the joints, both large and small, is common. Many normal folks have this, and so do folks with certain genetic conditions, like eds and... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.7k viewsReviewed >2 years ago
A 35-year-old member asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
Perhaps: Tuberous sclerosis complex (tsc) is an autosomal dominant condition. A parent with tsc has a 50-50 chance of passing her tsc mutation to each child. S... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5.7k viewsAnswered >2 years ago
A 60-year-old male asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
That and more: Genetic testing can be ordered by any physician, not just a clinical geneticist. But is this the best test for you? That's rather complicated, and the... Read More
Created for people with ongoing healthcare needs but benefits everyone.
4.1k viewsReviewed >2 years ago
A 37-year-old member asked:
Dr. Scott McLeananswered
Clinical Genetics 37 years experience
A bunch: On the medium-sized chromosome 17, there are about 1000 genes, many of which can become broken and cause disease, including neurofibromatosis type 1, ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
5k viewsReviewed >2 years ago
TestimonialsRecommendations and Thank you notes are endorsements given from patients or other doctors.
Recommendations and Thank you notes are endorsements given from patients or other doctors.
3
Recommendations
247
Thank you notes
Jun 11, 2015
excellent and caring
HealthTap member
Mar 30, 2015
Dr. McLean is an amazing doctor! #nationaldoctorsday2015 #virtualflower1
HealthTap member
Mar 31, 2015
Dr. McLean is an amazing doctor! #nationaldoctorsday2015 #virtualflower1
HealthTap member
Thanks for the suggestion. I will ask my daughter's geneticist next week when we see him. The smell comes and goes so maybe 10cc's per day might be too high of a dose. I would rather it be too high th...Read More
HealthTap member
Thank you, your answer or tip was very helpful! I've never heard a probability applied to the chance of inheritance. Very interesting.
HealthTap member
Thanks, but could this be passed on to the unborn child 4 different times, I have 2 healthy children from previous marriage,
Education & Training
Medical/Graduate school
Uniformed Services University of the Health Sciences F. Edward Hebert School of Medicine, MD,1986
Graduated 1986MD
Awards
AOA Honor Medical Society
US Army "A" Proficiency Designator
Top Clinical Geneticist , Second Place, National - Summer
2013
Affiliations
American College of Medical Genetics
American Academy of Pediatrics
Society of Inherited Metabolic Disease
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