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Thalassemia Prevention 
in Pakistan 
Prof. Imran Iqbal
What 
Is 
Your 
Most likely 
Diagnosis ?
Inheritance of b-Thalassaemia
β-Thalassaemia Major in Pakistan 
• Annual birth rate: 
5000 
• Total numbers: 
>50,000 
• Registered cases: 
~10,000 
• Mean life expectancy: 
10 years 
(S. Ahmed 1998)
β-Thalassaemia Trait in Pakistan 
 Punjabi 4.6 % 
 Pathan 5.2 % 
 Sindhi 4.3 % 
 Baluchi 8.0 % 
 Urdu speaking 5.3 % 
 Overall 5.5 % 
(S. Ahmed 1998)
Autosomal Recessive Inheritance 
• What are the chances 
of the next baby being 
affected ? 
• Next child suffering 
from Thallasemia 
= 25 % chances
How to Prevent further 
Thalassemic births ?
Carrier Screening 
Genetic Counseling Prenatal Diagnosis
• How can we find out Thallasemia carriers 
in the population ? 
• Extended Family Carrier Screening
EExxtteennddeedd ffaammiillyy 
CCaarrrriieerr SSccrreeeenniinngg
Index families 
183/591 (31%) 
Control Families 
0/397 (0%) 
General Population 
(5%)
Prevention of 
Thallasemia 
• - - if Thallasemia patients are present 
in the family--- 
• Carrier screening before marriage to 
avoid marriage between Thallasemia 
carriers
• How to explain the situation to the 
parents, grandparents & other family 
members ? 
• Genetic Counseling
Genetic Counseling 
•To understand and adapt to 
medical, familial and 
psychological consequences 
of Genetic Disease
Prevention of Thalassaemia 
• Identify the carriers 
• Avoid marriage 
between two carriers 
• Offer prenatal 
diagnosis to the 
affected couples
• How can we prevent further Thallasemic 
births in this family ? 
• Prenatal diagnosis (Intrauterine 
screening) for Thallasemia
Prevention of Thallasemia 
• Prenatal diagnosis after marriage 
• - if parents are Thallasemia carriers 
• - after birth of an affected baby for the next 
fetus
Prenatal diagnosis in Thallasemia ? 
• Chorion villus biopsy to get fetal DNA at 
8-10 weeks of LMP / Gestation 
• PCR to copy /produce adequate DNA for 
analysis 
• Genetic / DNA analysis to detect 
prevalent mutations of Thallasemia gene
Chorion villus biopsy
PND of Thalassaemia 
• 1st PND of Thalassaemia: May 1994 
• Total PNDs at AFIP: 2174 
– Thalassaemia trait: 1106 (50.9%) 
– Normal: 526 (24.2%) 
– Thalassaemia major: 542 (24.9%) 
• Misdiagnosis: 6/1632 (0.37%) 
(S. Ahmed, Prenatal Diagnosis 2007)
Prenatal Diagnosis 
Identify Couple at Risk 
Pregnancy 
Fetal Sampling 
Affected Fetus Lab Diagnosis Normal Fetus 
Termination of Pregnancy
Medical Ethics of 
Abortion / Termination of Pregnancy 
• Medical ethics for Muslims is related to 
Islamic jurisprudence or Fiqh 
• In case of any difference of opinion, 
consensus view of scholars is obtained
Islamic opinion / fatwa
Islamic view of Abortion 
Abortion 
is allowed to be performed 
Prior to 120 days 
from the start of conception 
if 
Fetus is having a proven, serious, untreatable 
congenital malformation 
or 
is likely to develop serious disease or handicap 
after birth

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Thallasemia prevention

  • 1. Thalassemia Prevention in Pakistan Prof. Imran Iqbal
  • 2.
  • 3. What Is Your Most likely Diagnosis ?
  • 4.
  • 6. β-Thalassaemia Major in Pakistan • Annual birth rate: 5000 • Total numbers: >50,000 • Registered cases: ~10,000 • Mean life expectancy: 10 years (S. Ahmed 1998)
  • 7. β-Thalassaemia Trait in Pakistan  Punjabi 4.6 %  Pathan 5.2 %  Sindhi 4.3 %  Baluchi 8.0 %  Urdu speaking 5.3 %  Overall 5.5 % (S. Ahmed 1998)
  • 8. Autosomal Recessive Inheritance • What are the chances of the next baby being affected ? • Next child suffering from Thallasemia = 25 % chances
  • 9. How to Prevent further Thalassemic births ?
  • 10. Carrier Screening Genetic Counseling Prenatal Diagnosis
  • 11. • How can we find out Thallasemia carriers in the population ? • Extended Family Carrier Screening
  • 13. Index families 183/591 (31%) Control Families 0/397 (0%) General Population (5%)
  • 14. Prevention of Thallasemia • - - if Thallasemia patients are present in the family--- • Carrier screening before marriage to avoid marriage between Thallasemia carriers
  • 15. • How to explain the situation to the parents, grandparents & other family members ? • Genetic Counseling
  • 16. Genetic Counseling •To understand and adapt to medical, familial and psychological consequences of Genetic Disease
  • 17. Prevention of Thalassaemia • Identify the carriers • Avoid marriage between two carriers • Offer prenatal diagnosis to the affected couples
  • 18. • How can we prevent further Thallasemic births in this family ? • Prenatal diagnosis (Intrauterine screening) for Thallasemia
  • 19. Prevention of Thallasemia • Prenatal diagnosis after marriage • - if parents are Thallasemia carriers • - after birth of an affected baby for the next fetus
  • 20. Prenatal diagnosis in Thallasemia ? • Chorion villus biopsy to get fetal DNA at 8-10 weeks of LMP / Gestation • PCR to copy /produce adequate DNA for analysis • Genetic / DNA analysis to detect prevalent mutations of Thallasemia gene
  • 22.
  • 23.
  • 24. PND of Thalassaemia • 1st PND of Thalassaemia: May 1994 • Total PNDs at AFIP: 2174 – Thalassaemia trait: 1106 (50.9%) – Normal: 526 (24.2%) – Thalassaemia major: 542 (24.9%) • Misdiagnosis: 6/1632 (0.37%) (S. Ahmed, Prenatal Diagnosis 2007)
  • 25. Prenatal Diagnosis Identify Couple at Risk Pregnancy Fetal Sampling Affected Fetus Lab Diagnosis Normal Fetus Termination of Pregnancy
  • 26. Medical Ethics of Abortion / Termination of Pregnancy • Medical ethics for Muslims is related to Islamic jurisprudence or Fiqh • In case of any difference of opinion, consensus view of scholars is obtained
  • 28. Islamic view of Abortion Abortion is allowed to be performed Prior to 120 days from the start of conception if Fetus is having a proven, serious, untreatable congenital malformation or is likely to develop serious disease or handicap after birth