Sickle cell disease (SCD), the most prevalent hemoglobinopathy globally, is a complex, systemic disorder with significant phenotypic variability and evolving clinical burden. As the therapeutic landscape expands—ranging from hydroxyurea and red blood cell transfusions to novel disease-modifying agents and curative approaches, such as hematopoietic stem cell transplantation and gene therapy—patient selection for each strategy becomes increasingly multifaceted. This article explores how clinical severity, genotype, age, organ involvement, access to care, and patient preferences interact in shaping therapeutic decisions. Two illustrative cases highlight how disease trajectory, individual choices, and real-world barriers influence eligibility and response to treatment. We propose a multidimensional framework for patient selection, incorporating both clinical indicators and patient-centered outcomes. While monotherapy with a single disease-modifying therapy remains the cornerstone of SCD treatment, all therapeutic decisions should be individualized. However, combination and curative approaches are more complex and require a comprehensive evaluation of efficacy, feasibility, and patient values. Emerging trends, including biomarker-driven stratification, inclusive clinical trials, and shared decision-making tools, coupled with the use of artificial intelligence, offer opportunities to better align therapy with the needs of diverse patients across settings. Ultimately, defining the “right” patient demands dynamic, context-sensitive evaluation, ensuring that therapeutic advances translate into equitable and valuable care for individuals with SCD globally.

1.
Piel
FB
,
Rees
DC
,
DeBaun
MR
, et al.
Defining global strategies to improve outcomes in sickle cell disease: a Lancet Hematology Commission
.
Lancet Haematol
.
2023
;
10
(
8
):
e633
-
e686
.
2.
Colombatti
R
,
Hegemann
I
,
Medici
M
,
Birkegård
C
.
Systematic literature review shows gaps in data on global prevalence and birth prevalence of sickle cell disease and sickle cell trait: call for action to scale up and harmonize data collection
.
J Clin Med
.
2023
;
12
(
17
):
5538
.
3.
Osunkwo
I
,
Andemariam
B
,
Minniti
CP
, et al.
Impact of sickle cell disease on patients' daily lives, symptoms reported, and disease management strategies: results from the international sickle cell world assessment survey (SWAY)
.
Am J Hematol
.
2021
;
96
(
4
):
404
-
417
.
4.
Rodigari
F
,
Brugnera
G
,
Colombatti
R
.
Health-related quality of life in hemoglobinopathies: a systematic review from a global perspective
.
Front Pediatr
.
2022
;
10
:
886674
.
5.
Kavanagh
PL
,
Fasipe
TA
,
Wun
T
.
Sickle cell disease: a review
.
JAMA
.
2022
;
328
(
1
):
57
-
68
.
6.
Howell
KE
,
Pugh
N
,
Longoria
J
, et al.
Burden of aging: health outcomes among adolescents and young adults with sickle cell disease
.
Hemasphere
.
2023
;
7
(
8
):
e930
.
7.
Yu
EA
,
Zacharias
HU
,
Kelly
S
,
Vichinsky
E
.
Improving healthspan among people with sickle cell disease: leveraging precision health in an era of treatments with curative intent
.
Am J Hematol
.
2024
;
99
(
8
):
1456
-
1458
.
8.
Siewny
L
,
King
A
,
Melvin
CL
, et al.
Impact of an individualized pain plan to treat sickle cell disease vaso-occlusive episodes in the emergency department
.
Blood Adv
.
2024
;
8
(
20
):
5330
-
5338
.
9.
Bartolucci
P
.
Novel clinical care models for patients with sickle cell disease
.
Hematology Am Soc Hematol Educ Program
.
2024
;
2024
(
1
):
618
-
622
.
10.
Yassin
M
,
Minniti
C
,
Shah
N
, et al.
Evidence and gaps in clinical outcomes of novel pharmacologic therapies for sickle cell disease: a systematic literature review highlighting insights from clinical trials and real-world studies
.
Blood Rev
.
2025
;
73
:
101298
.
11.
Democratizing Education for Sickle Cell Disease Gene Therapy
. Sickle cell disease gene therapy FAQ. Accessed 7 August
2025
. https://www.genome.gov/sites/default/files/media/files/2024-09/Sickle_cell_disease_gene_therapy_FAQ.pdf
12.
Harris
KM
,
Preiss
L
,
Varughese
T
, et al
;
Sickle Cell Disease Implementation Consortium
.
Examining mental health, education, employment, and pain in sickle cell disease
.
JAMA Netw Open
.
2023
;
6
(
5
):
e2314070
.
13.
Drahos
J
,
Boateng-Kuffour
A
,
Calvert
M
, et al.
Health-related quality of life and economic impacts in adults with sickle cell disease with recurrent vaso-occlusive crises: findings from a prospective longitudinal real-world survey
.
Qual Life Res
.
2025
;
34
(
7
):
2019
-
2029
.
14.
Yawn
BP
,
Buchanan
GR
,
Afenyi-Annan
AN
, et al.
Management of sickle cell disease: summary of the 2014 evidence-based report by expert panel members
.
JAMA
.
2014
;
312
(
10
):
1033
-
1048
.
15.
Brousse
V
,
Arnaud
C
,
Lesprit
E
, et al.
Evaluation of outcomes and quality of care in children with sickle cell disease diagnosed by newborn screening: a real-world nation-wide study in France
.
J Clin Med
.
2019
;
8
(
10
):
1594
.
16.
Italian Association of Pediatric Hematology Oncology (AIEOP) Recommendations for the Management of Sickle Cell Disease in Childhood in Italy
. (4) th ed.
April
2023
. Accessed
7
August
2025
. https://www.aieop.org/web/aggiornamento-raccomandazioni-malattia-drepanocitica/
17.
Brandow
AM
,
Carroll
CP
,
Creary
S
, et al.
American Society of Hematology 2020 guidelines for sickle cell disease: management of acute and chronic pain
.
Blood Adv
.
2020
;
4
(
12
):
2656
-
2701
.
18.
Chou
ST
,
Alsawas
M
,
Fasano
RM
, et al.
American Society of Hematology 2020 guidelines for sickle cell disease: transfusion support
.
Blood Adv
.
2020
;
4
(
2
):
327
-
355
.
19.
Kanter
J
,
Liem
RI
,
Bernaudin
F
, et al.
American Society of Hematology 2021 guidelines for sickle cell disease: stem cell transplantation
.
Blood Adv
.
2021
;
5
(
18
):
3668
-
3689
.
20.
Shah
N
,
Beenhouwer
D
,
Broder
MS
, et al.
Development of a severity classification system for sickle cell disease
.
Clinicoecon Outcomes Res
.
2020
;
12
:
625
-
633
.
21.
Strunk
C
,
Tartaglione
I
,
Piccone
CM
, et al.
Global geographic differences in healthcare utilization for sickle cell disease pain crises in the CASiRe cohort
.
Blood Cells Mol Dis
.
2021
;
92
:
102612
.
22.
Campbell
AD
,
Colombatti
R
,
Andemariam
B
, et al.
An analysis of racial and ethnic backgrounds within the CASiRe international cohort of sickle cell disease patients: implications for disease phenotype and clinical research
.
J Racial Ethn Health Disparities
.
2021
;
8
(
1
):
99
-
106
.
23.
Daniel
Y
,
Elion
J
,
Allaf
B
, et al.
Newborn screening for sickle cell disease in Europe
.
Int J Neonatal Screen
.
2019
;
5
(
1
):
15
.
24.
Njoku
F
,
Pugh
N
,
Brambilla
D
, et al.
Mortality in adults with sickle cell disease: results from the Sickle Cell Disease Implementation Consortium (SCDIC) registry
.
Am J Hematol
.
2024
;
99
(
5
):
900
-
909
.
25.
Abrams
CM
,
Davila
N
,
Badawy
SM
, et al
;
Sickle Cell Disease Implementation Consortium
.
User perceptions of a multilevel mhealth intervention to boost adherence to hydroxyurea in sickle cell disease
.
Pediatr Blood Cancer
.
2025
;
72
(
7
):
e31746
.
26.
Pellegrini
M
,
Chakravorty
S
,
Del Mar Manu Pereira
M
, et al.
Sickle cell disease: embedding patient participation into an international conference can transform the role of lived experience
.
Orphanet J Rare Dis
.
2023
;
18
(
1
):
341
.
27.
Mahadevia
H
,
Ponvilawan
B
,
Madan
U
,
Sharma
P
,
Qasim
H
,
Shrestha
A
.
A review on disease modifying pharmacologic therapies for sickle cell disease
.
Ann Hematol
.
2025
;
104
(
2
):
881
-
893
.
28.
Quinn
CT
,
Ware
RE
.
The modern use of hydroxyurea for children with sickle cell anemia
.
Haematologica
.
2025
;
110
(
5
):
1061
-
1073
.
29.
Lobo
CL
,
Pinto
JF
,
Nascimento
EM
,
Moura
PG
,
Cardoso
GP
,
Hankins
JS
.
The effect of hydroxcarbamide therapy on survival of children with sickle cell disease
.
Br J Haematol
.
2013
;
161
(
6
):
852
-
860
.
30.
Pandey
A
,
Kaur
H
,
Borah
S
, et al.
A systematic review on hydroxyurea therapy for sickle cell disease in India
.
Indian J Med Res
.
2022
;
156
(
2
):
299
-
311
.
31.
Latham
TS
,
Czabanowska
K
,
Babich
S
,
Yego-Kosgei
F
,
Shook
LM
,
Ware
RE
.
Primary stroke screening and hydroxyurea treatment for sickle cell anemia in pediatric healthcare settings in east and central Africa: a narrative review of capacity gaps and opportunities
.
Public Health Rev
.
2025
;
46
:
1608359
.
32.
James
J
,
Andemariam
B
,
Mahlangu
J
, et al.
Motivators and barriers for people with sickle cell disease participating in clinical trials: global findings from the LISTEN survey
.
Blood
.
2023
;
142
(
suppl 1
):
2498
-
2500
.
33.
Opoka
RO
,
Hume
HA
,
Latham
TS
, et al.
Hydroxyurea to lower transcranial doppler velocities and prevent primary stroke: the Uganda NOHARM sickle cell anemia cohort
.
Haematologica
.
2020
;
105
(
6
):
e272
-
e275
.
34.
Abdullahi
SU
,
Sunusi
S
,
Abba
MS
, et al.
Hydroxyurea for secondary stroke prevention in children with sickle cell anemia in Nigeria: a randomized controlled trial
.
Blood
.
2023
;
141
(
8
):
825
-
834
.
35.
Ding
K
,
Bear
B
,
Sood
E
,
Alderfer
M
,
Crosby
L
,
Hildenbrand
AK
.
Disease-modifying therapies for sickle cell disease: decisional needs and supports among adolescents and young adults
.
Pediatr Blood Cancer
.
2024
;
71
(
7
):
e30999
.
36.
Walden
J
,
Creary
S
.
Practical guide for disease-modifying medication management of children and adolescents with sickle cell disease
.
Hematology Am Soc Hematol Educ Program
.
2024
;
2024
(
1
):
604
-
610
.
37.
Vuong
C
,
Eckhardt
CL
,
Heijboer
H
, et al.
Long-term follow-up of children with sickle cell disease diagnosed by newborn screening in the Netherlands: overview of morbidity and mortality
.
Am J Hematol
.
2024
;
99
(
8
):
1606
-
1609
.
38.
Hildenbrand
AK
,
Mara
CA
,
Murphy
B
, et al.
Engaging parents of children with sickle cell disease in shared decision-making for hydroxyurea: the ENGAGE-HU study
.
Pediatr Blood Cancer
.
2025
;
72
(
5
):
e31639
.
39.
Lugthart
S
,
Ginete
C
,
Kuona
P
,
Brito
M
,
Inusa
BPD
.
An update review of new therapies in sickle cell disease: the prospects for drug combinations
.
Expert Opin Pharmacother
.
2024
;
25
(
2
):
157
-
170
.
40.
Youssry
I
,
Ayad
N
.
Sickle cell disease: combination new therapies vs. CRISPR-Cas9 potential and challenges—review article
.
Ann Hematol
.
2024
;
103
(
8
):
2613
-
2619
.
41.
Nickel
RS
,
Margulies
S
,
Panchapakesan
K
, et al.
Adding hydroxyurea to chronic transfusion therapy for sickle cell anemia reduces transfusion burden
.
Transfusion
.
2025
;
65
(
1
):
38
-
49
.
42.
Kutlar
A
,
Kanter
J
,
Liles
DK
, et al.
Effect of crizanlizumab on pain crises in subgroups of patients with sickle cell disease: a SUSTAIN study analysis
.
Am J Hematol
.
2019
;
94
(
1
):
55
-
61
.
43.
Brousse
V
,
Rees
D
,
Colombatti
R
.
What's wrong with drug development for sickle cell disease?
Hemasphere
.
2025
;
9
(
2
):
e7008
.
44.
Kassim
AA
,
Walters
MC
,
Eapen
M
, et al.
Haploidentical bone marrow transplantation for sickle cell disease
.
NEJM Evid
.
2025
;
4
(
3
):
EVIDoa2400192
.
45.
Mekelenkamp
H
,
Smiers
F
,
Camp
N
,
Stubenrouch
F
,
Lankester
A
,
de Vries
M
.
Decision making for hematopoietic stem cell transplantation in pediatric, adolescent, and young adult patients with a hemoglobinopathy—shared or not?
Pediatr Blood Cancer
.
2021
;
68
(
9
):
e29099
.
46.
de Franceschi
L
,
Locatelli
F
,
Rees
D
, et al.
Selecting patients with sickle cell disease for gene addition or gene editing-based therapeutic approaches: report on behalf of a joint EHA specialized working group and EBMT Hemoglobinopathies Working Party Consensus Conference
.
Hemasphere
.
2025
;
9
(
3
):
e70089
.
47.
de la Fuente
J
,
Gluckman
E
,
Makani
J
, et al
;
Paediatric Diseases Working Party of the European Society for Blood and Marrow Transplantation
.
The role of haematopoietic stem cell transplantation for sickle cell disease in the era of targeted disease-modifying therapies and gene editing
.
Lancet Haematol
.
2020
;
7
(
12
):
e902
-
e911
.
48.
Kanter
J
,
Walters
MC
,
Krishnamurti
L
, et al.
Biologic and clinical efficacy of lentiglobin for sickle cell disease
.
N Engl J Med
.
2022
;
386
(
7
):
617
-
628
.
49.
Frangoul
H
,
Locatelli
F
,
Sharma
A
, et al
;
CLIMB SCD-121 Study Group
.
Exagamglogene autotemcel for severe sickle cell disease
.
N Engl J Med
.
2024
;
390
(
18
):
1649
-
1662
.
50.
Bakshi
N
,
Katoch
D
,
Sinha
CB
, et al.
Assessment of patient and caregiver attitudes and approaches to decision-making regarding bone marrow transplant for sickle cell disease: a qualitative study
.
JAMA Netw Open
.
2020
;
3
(
5
):
e206742
.
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