Vitiligo
Vitiligo
for vitiligo
          Michelle Rodrigues, MBBS(Hons), FACD,a,b Khaled Ezzedine, MD, PhD,c,d Iltefat Hamzavi, MD,e
           Amit G. Pandya, MD,f and John E. Harris, MD, PhD,g on behalf of the Vitiligo Working Group
       Victoria, Australia; Creteil, France; Detroit, Michigan; Dallas, Texas; and Worcester, Massachusetts
    Learning objectives
    After completing this learning activity, participants should be able to choose an optimal approach to management of all patients with vitiligo; list the risks associated with treatment for
    vitiligo; and discuss emerging treatment options for vitiligo.
    Disclosure
    Editors
    The editors involved with this CME activity and all content validation/peer reviewers of the journal-based CME activity have reported no relevant financial relationships with
    commercial interest(s).
    Authors
    The authors involved with this journal-based CME activity other than Dr Harris have reported no relevant financial relationships with commercial interest(s). Dr Harrris has served on advisory
    boards, as a consultant, or as principle investigator on research agreements with Pfizer, AbbVie, Genzyme/Sanofi, Concert Pharmaceuticals, Stiefel/GSK, Mitsubishi Tanabe Pharma, Novartis,
    Aclaris Therapeutics, The Expert Institute, Celgene, Biologics MD, and Dermira. Dr Harris relevant relationship with Pfizer was resolved by nonconflicted reviewers and editors.
    Planners
    The planners involved with this journal-based CME activity have reported no relevant financial relationships with commercial interest(s). The editorial and education staff involved
    with this journal-based CME activity have reported no relevant financial relationships with commercial interest(s).
         Clinicians should be aware that vitiligo is not merely a cosmetic disease and that there are safe and effective
         treatments available for vitiligo. It is important to recognize common and uncommon presentations and
         those with active disease, as well as their implications for clinical management; these were discussed in the
         first article in this continuing medical education series. Existing treatments include topical and systemic
         immunosuppressants, phototherapy, and surgical techniques, which together may serve to halt disease
         progression, stabilize depigmented lesions, and encourage repigmentation. We discuss how to optimize the
         currently available treatments and highlight emerging treatments that may improve treatment efficacy in the
         future. ( J Am Acad Dermatol 2017;77:17-29.)
         Key words: afamelanotide; biologics; corticosteroids; excimer lamp; excimer laser; grafting; leukoderma;
         methotrexate; narrowband ultraviolet light; phototherapy; pigmentation; tacrolimus; treatment; vitiligo.
From the Department of Dermatology,a St. Vincents Hospital, The                                        Conflicts of interest: See above.
   Skin and Cancer Foundation Inc, and The Royal Childrens                                             Accepted for publication November 6, 2016.
   Hospital,b Victoria, Australia; Department of Dermatology,c                                          Reprints not available from the authors.
   Henri Mondor Hospital, and EpiDermE,d Universite Paris-Est,                                          Correspondence to: Michelle Rodrigues, MBBS(Hons), FACD,
   Creteil, France; Department of Dermatology,e Henry Ford                                                 Department of Dermatology, 41 Victoria Parade, Fitzroy, VIC
   Hospital, Detroit; Department of Dermatology,f University of                                            3065, Australia. E-mail: dr.rodrigues@gmail.com.
   Texas Southwestern Medical Center, Dallas; and the                                                   0190-9622/$36.00
   Department of Dermatology,g University of Massachusetts                                               2016 by the American Academy of Dermatology, Inc. Published
   Medical School, Worcester.                                                                              by Elsevier Inc. All rights reserved.
Supported by the National Institute of Arthritis and Musculoskel-                                       http://dx.doi.org/10.1016/j.jaad.2016.11.010
   etal and Skin Diseases, part of the National Institutes of Health,                                   Date of release: July 2017
   under Award Numbers AR061437 and AR069114, and research                                              Expiration date: July 2020
   grants from the Kawaja Vitiligo Research Initiative, Vitiligo
   Research Foundation, and Dermatology Foundation Stiefel
   Scholar Award (to Dr Harris).
                                                                                                                                                                                                17
18 Rodrigues et al                                                                            J AM ACAD DERMATOL
                                                                                                           JULY 2017
reports, 5 mg betamethasone/dexamethasone was               significant. Facial lesions responded best, with most
used on 2 consecutive days per week.24,25 This was          patients tolerating treatment well. While small, this
increased to 7.5 mg/day in nonresponders                    study provides evidence of efficacy for the treatment
and decreased back to 5 mg/day when disease                 of vitiligo with tacrolimus (level of evidence I, strength
progression was arrested. The results showed that           of recommendation A).
89% of patients were stabilized within 1 to 3 months.           Another study evaluated 100 children with vitiligo
In another study, dexamethasone 10 mg twice                 treated with tacrolimus, clobetasol, or placebo
weekly for #24 weeks halted disease progression             ointment.39 The clobetasol-treated group received
in 88% of patients after 18.2 weeks.26 However, 69%         intermittent therapy and others continuous therapy;
experienced side effects, including weight gain,            the clobetasol-treated group received clobetasol
insomnia, acne, agitation, menstrual irregularities,        ointment for 2 months, petroleum jelly for the next
and hypertrichosis.                                         2 months, and clobetasol again for the remaining
                                                            2 months. The tacrolimus-treated group received
Other immunosuppressants and biologics                      0.1% ointment for 6 months, and the placebo-treated
   Limited data are available for the use of other          group received petroleum jelly continuously for
immunosuppressant drugs in vitiligo. In a recent            6 months. There was no statistically significant
randomized comparative study, low-dose oral                 difference between the tacrolimus and clobetasol
methotrexate was reported to be comparable to OMP,          groups, although facial lesions responded better
and suggested when OMP is contraindicated, although         than nonfacial lesions overall. Both treatments
responses were marginal with small study sizes.27           were superior to placebo (level of evidence I,
   Antietumor necrosis factor-a drugs have been             strength of recommendation A).
suggested for the treatment of vitiligo28,29 despite            A small study of 10 patients with bilaterally
reports of no benefit and even initiation and               symmetrical generalized vitiligo treated with
worsening with their administration.30-34 Twice             clobetasol cream on one side of the body and
daily oral cyclophosphamide (50 mg) has also                pimecrolimus cream on the other showed a
demonstrated repigmentation in 29 patients,                 comparable degree of repigmentation, although
including those with difficult to treat acral sites,        small numbers make noninferiority trials like this
although significant side effects were reported.35          difficult to interpret.40 (level of evidence II-I, strength
Although spontaneous remissions are uncommon                of recommendation B).
in patients with vitiligo, treatment recommendations           NB-UVB versus PUVA. NB-UVB therapy has
based on uncontrolled studies should be weighed             become the predominant form of phototherapy for
against that possibility.                                   vitiligo because of its efficacy, relative lack of side
                                                            effects, and convenience. A study comparing
Other treatments                                            12 months of twice weekly NB-UVB to twice weekly
   Vitamin D analogs (level III-I evidence). Most           oral 8-methoxypsoralen PUVA demonstrated
studies have evaluated calcipotriene in combination         superior repigmentation, color matching, and fewer
with other therapies, particularly phototherapy.            side effects in the NB-UVBetreated group.11 Overall,
Calcipotriene may shorten the time to achieve               64% of the NB-UVB group had [50% improvement
repigmentation and reduce overall cumulative                in BSA affected versus 36% in the PUVA group. The
exposure during phototherapy, but it has not                superiority of NB-UVB was maintained 12 months
demonstrated appreciable repigmentation when                after treatment ended (level of evidence I, strength of
used alone.36,37                                            recommendation A).
   Other treatments for vitiligo appeared to be                 Another investigator-blinded trial of NB-UVB
promising in pilot trials but failed to demonstrate         versus PUVA 3 times per week for 6 months was
significant efficacy in later controlled trials. Examples   conducted in 56 patients.41 Median repigmentation
include Polypodium leucotomas, ginkgo biloba,               was similar between the 2 groups but adverse effects,
antioxidants, and pseudocatalase cream.38                   particularly pruritus, were much lower in the
   Comparative efficacy studies. Topical steroids           NB-UVB group (7.4% vs 57.2%). The face, neck,
versus calcineurin inhibitors. There have been a few        and trunk demonstrated the best response in
studies comparing different treatments for vitiligo. In 1   both groups (level of evidence I, strength of
study, tacrolimus ointment 0.1% was compared                recommendation A).
with clobetasol cream 0.05% in children.7 This                 Combination therapies. Although antioxidants have
randomized, double-blind, comparative trial revealed        been promoted for various skin diseases, including
49% repigmentation with clobetasol and 41% with             vitiligo, few controlled studies have attempted
tacrolimus, but the difference was not statistically        to determine their true efficacy. In 1 randomized,
J AM ACAD DERMATOL                                                                          Rodrigues et al 21
VOLUME 77, NUMBER 1
into tissue and cellular grafts. Tissue grafts usually      Koebnerization, confetti-like lesions, inflammatory
transfer solid tissue from donor to recipient site in a     vitiligo, and trichrome vitiligo are also indicators of
1:1 ratio. Cellular grafts cover larger surface areas and   unstable disease and are discussed in detail in the
are composed of suspensions of keratinocytes and            first article in this continuing medical education
melanocytes in a donor to recipient ratio up to 1:10.       series.52,53
                                                                Recipient site is another variable that should
Patient selection                                           be considered. In general, the head and neck
   Patient selection is key to success with surgical        demonstrate a superior response.55,56 Acrofacial
treatment for vitiligo. Those with stable disease have      disease and areas over joints respond poorly, possibly
a superior response to surgical intervention. Patients      because of repeated motion or friction and injury at
with segmental disease have better results than those       these locations.55,56 Patients must be screened for a
with focal disease who, in turn, fare better than           history of keloids, coagulation abnormalities,
patients with generalized, unstable vitiligo.50-53          bloodborne infections, and other contraindications
   Disease stability must be evaluated before surgery       to surgery, such as severe heart disease.
and is defined by the absence of new or expanding
lesions over 6 months to 2 years. Several methods
can be used to assess stability, such as patient report,    Tissue grafts
serial photography, and validated scoring systems.             Minipunch grafts are performed by placing 1- to
These include changes in the Vitiligo Area Scoring          1.5-mm punch biopsy specimens from a donor site
Index, Vitiligo European Task Force assessment, and         into a preprepared recipient site (Figs 8 and 9). This
Vitiligo Disease Activity Score. In cases where             technically simple, inexpensive technique does not
stability or treatment outcome is uncertain,                require specialized equipment but is difficult to
performing a test procedure with a single punch             perform on large areas, can lead to pigment and
graft in the center of a stable, depigmented lesion to      textural variations such as cobblestoning, and carries
assess the degree of repigmentation is useful.53,54         a risk of scarring and keloids.57-60
J AM ACAD DERMATOL                                                                              Rodrigues et al 23
VOLUME 77, NUMBER 1
  Fig 10. Vitiligo. Harvesting of suction blister grafts.   Fig 11. Vitiligo. Segmental variant of vitiligo on the left
                                                            upper forehead at baseline.
   Suction blister epidermal grafting involves the
creation and transfer of blister roofs from normal
skin (Fig 10) to abraded depigmented skin.
Advantages include low cost, use of simple
equipment, uniform color match, low rates of
scarring, and good efficacy. The time required to
create blisters and risk of hemorrhagic blisters are
disadvantages.57-59,61-63
Cellular grafts
    Cellular grafts can be cultured or noncultured and
involve creating a cellular suspension from a thin to
ultrathin skin graft. Noncultured options, although
complex, do not require a full cell culture laboratory.     Fig 12. Vitiligo. Segmental variant of vitiligo on the left
Therefore, noncultured epidermal suspension                 upper forehead 9 months after noncultured epidermal
                                                            suspension grafting.
(NCES) grafting, also known as a melanocyte
keratinocyte transplant procedure, is performed             Comparative efficacy
more frequently than cultured melanocyte grafting.             NCES has shown superior extent and quality of
It is now considered the criterion standard for vitiligo    repigmentation compared with blister grafting.67
grafting worldwide.                                         However, blister grafting and punch grafting are
    NCES is performed by harvesting an ultrathin skin       much easier techniques to master and require fewer
graft from a donor site, which is then incubated in         support staff.
trypsin. After removal of the epidermis from the
dermis, the epidermis is manually disrupted and then
                                                            Camouflage techniques
centrifuged to obtain the cellular pellet, which is
                                                               Camouflage may be an important part of overall
resuspended in Ringers lactate, applied to the
                                                            patient management given the aesthetic impact of
abraded recipient site, and dressed. Movement
                                                            the disease in many patients. Self-tanning agents
should be restricted postoperatively to avoid
                                                            provide waterproof protection for 3 to 5 days; highly
dressing displacement, but bed rest is not required.
                                                            pigmented cover creams require daily application
Dressings are removed between days 4 and 7. This
                                                            but are lightweight and waterproof. While dermal
procedure yields good cosmetic results and color
                                                            pigmentation can be achieved with techniques like
match (Figs 11 and 12). Disadvantages include the
                                                            cosmetic tattooing, potential risks should be
cost, need for specialized equipment and a skilled
                                                            carefully considered. These risks include the
team, and limitations of sites that can be successfully
                                                            potential for infection, risk of koebnerizing vitiligo,
treated.47,51 A new method using epidermal suction
                                                            lack of legislation on tattoo pigments, poor color
blisters for donor skin has also been described.64 Of
                                                            match, bleeding of color over time, and potential for
note, battery-operated cell harvesting devices have
                                                            spread of the lesion beyond the tattoo border.68
also been developed, offering a self-contained
system for cell separation without the need for
additional equipment. Head to head comparison               TREATMENT ALGORITHM
studies to standard NCES tissue processing                    Treatment for vitiligo should be started as early as
techniques have not yet been performed.65,66                possible to maximize efficacy. The type of vitiligo,
24 Rodrigues et al                                                                               J AM ACAD DERMATOL
                                                                                                              JULY 2017
                                                               Topical therapies
                                                                   Reported side effects of inappropriate or
                                                               unsupervised topical steroids include cutaneous
                                                               atrophy, telangiectasias, hypertrichosis, acne, and
                                                               striae. However, its side effect profile has been
                                                               deemed favorable when used as prescribed by
                                                               dermatologists for atopic dermatitis, in which there
                                                               is epidermal barrier dysfunction and a greater
                                                               likelihood of systemic absorption.69 To minimize
                                                               the risk of side effects, a sequential discontinuous
                                                               scheme may be used.
                                                                   Topical tacrolimus lacks the side effect profile of
                                                               topical steroids and appears to be much safer,
                                                               particularly on sensitive areas like the face, genitals,
                                                               and intertriginous sites. When topical tacrolimus first
                                                               became available for use, concerns were raised
                                                               about the risk of malignancies that had been
                                                               observed in those taking large oral doses to prevent
                                                               transplant organ rejection. However, a recent
                                                               systematic review and metaanalysis reporting on
Fig 13. Treatment algorithm for the segmental variant of       the risk of lymphoma in those with atopic dermatitis
vitiligo. NB-UVB, Narrowband ultraviolet light phototherapy;   concluded that it does not appear to significantly
TCS, topical corticosteroids; TIM, topical immunomodulators.   contribute to the overall risk of lymphoma in this
                                                               subgroup of patients.70 Nevertheless, this black box
extent and duration of disease, effect on quality of           warning remains and it is still not approved by the
life, and previous treatments should determine                 FDA, Therapeutic Goods Administration (Australia),
the initial treatment approach. The segmental                  or the European Medicines Agency for use in vitiligo.
variant, when treated early in the disease course              If burning after application of tacrolimus is noted, the
(#12 months), can be initially treated with                    concentration may be decreased. While skin flushing
skin-directed medical therapy. In nonresponsive or             may occur immediately after alcohol ingestion and is
longstanding stable disease, surgical therapies                not always limited to the area of application, it
should be considered (Fig 13).                                 resolves quickly.71
    The extent of involvement also determines the
treatment approach in vitiligo. Localized disease              Phototherapy
(#5-10% of BSA) is best treated with topical therapy               While an absence of melanin in lesional skin and
and targeted phototherapy, while a combination of NB-          prolonged administration of phototherapy may give
UVB and topical therapy is used to treat more extensive        rise to concern about the development of skin cancer
disease ([5-10% of BSA). OMP can be added for those            in this population, recent evidence suggests that the
with clinical signs of aggressive, progressive disease         genetic and autoimmune profile of vitiligo patients
(Fig 14). Efficacy can be assessed at approximately            confers a degree of protection against melanoma and
6 months based on twice-weekly NB-UVB.                         nonmelanoma skin cancers (NMSCs).72-78 While
                                                               prolonged PUVA for psoriasis increases the risk of
TREATMENT SAFETY                                               cutaneous malignancies in white patients, the same
Key points                                                     has not been noted with NB-UVB.79,80 Even studies
d   Topical corticosteroids, when used as                      of PUVA for vitiligo do not appear to be associated
    directed and with dermatologic supervision,                with the development of NMSCs.81,82
    appear to be safe and are usually efficacious                  While Hexsel et al83 reported a higher annual
    for vitiligo                                               incidence of NMSC in those with vitiligo compared
d   Despite evidence that tacrolimus does not                  with the rest of the population, 5 other studies reveal
    appear to increase the risk of malignancy, its             lower rates of melanoma and NMSC in this
    black box warning remains                                  population.84-88 In addition, a 2005 review of the
d   Long-term administration of NB-UVB does not                literature suggested that chronic use of ultraviolet
    appear to increase incidence of melanoma or                B light does not seem to increase the risk of
    nonmelanoma skin cancers in those with                     skin cancer.89 Limitations exist for all of these
    vitiligo                                                   studies, highlighting the need for well-constructed
J AM ACAD DERMATOL                                                                                                                               Rodrigues et al 25
VOLUME 77, NUMBER 1
Vitiligo
                                                                                                                                                          Continue treatment
                                                                                                                                                         and review at 3 month
             Surgical therapy                                                                                                                                  intervals
                                                                                                    Cosmetic camou lage
                                                                 Stop OMP and continue
                                                                 NBUVB + TCS/TMI with
                                                                    3 month intervals
                                                                                                        Depigment (if
                                                                                                    extensive - >70%BSA)
prospective randomized controlled trials that span                                          of 48.64% and 33.26% at day 168, respectively. Side
decades.                                                                                    effects included hyperpigmentation, itch, and
                                                                                            nausea.90 Additional studies with this promising
Surgical treatments                                                                         treatment are warranted.
  Complications are rare with most surgical
procedures but include pain, hypopigmentation,                                              Targeted immunotherapy
koebnerization, scarring, and infection.47,60                                                  In the first article in this series, we outlined recent
                                                                                            translational research that has provided insight
EMERGING TREATMENT MODALITIES                                                               into possible targets for targeted therapies
Key points                                                                                  for vitiligo. In particular, interfering with the
d   Afamelanotide enhances the efficacy of                                                  interferon (IFN)-g-CXCL10 chemokine axis may be
    NB-UVB in patients with vitiligo                                                        an effective strategy to develop novel, targeted
d   Targeted immunotherapy has been safe                                                    immunotherapies.91 Significant repigmentation of 2
    and effective for psoriasis, and a similar                                              patients after the oral administration of tofacitinib92
    treatment strategy may be equally beneficial                                            (a paneJanus kinase inhibitor [JAK 1/3)]) and
    for vitiligo patients                                                                   ruxolitinib93 (JAK 1/2 inhibitor), which directly
d   The interferon-g-CXCL10 chemokine axis                                                  inhibit IFN-g signaling, supports this concept.
    appears to be an important target for the                                               However, repigmentation regressed when the
    development of new treatments for vitiligo                                              patient discontinued ruxolitinib, suggesting that
                                                                                            continuous treatment is required. Importantly, the
a-Melanocyte-stimulating hormone analogues                                                  patients serum CXCL10 level was reduced during
   Afamelanotide is a potent synthetic analogue of                                          treatment with ruxolitinib, suggesting that JAK
the naturally occurring a-melanocyte-stimulating                                            inhibition works by targeting the IFN-g-CXCL10
hormone. It was investigated as an adjunct to                                               axis, and that it may serve as a biomarker for disease
NB-UVB in a double blind, multicenter study.                                                activity and treatment response. A recent case series
Patients treated with NB-UVB plus afamelanotide                                             reported efficacy of topical ruxolitinib in patients
versus NB-UVB alone achieved repigmentation rates                                           with vitiligo, particularly on the face.94 While these
26 Rodrigues et al                                                                                   J AM ACAD DERMATOL
                                                                                                                     JULY 2017
advances are promising for vitiligo sufferers and        autoimmune destruction of melanocytes along
dermatologists alike, larger, controlled studies are     with stimulation of melanocyte regeneration is
required to assess the safety and efficacy of targeted   likely to produce the best results. Lack of previous
therapies for vitiligo.                                  success is often the reason for a pessimistic outlook
                                                         regarding treatment on the part of both the treating
Depigmentation                                           physician and the patient; however, education and
    For patients with recalcitrant and widespread        establishing realistic expectations, a comprehensive
([50% of BSA) vitiligo, depigmentation of the            treatment plan, and photography at each visit can
remaining islands of pigment may provide cosmetic        result in a successful outcome. Recent advances in
improvement that may enhance quality of life.            determining the pathogenesis of the disease have
Following its discovery in rubber gloves95               opened exciting new treatment avenues that may
more than 50 years ago, monobenzylether of               herald a revolution in the future treatment of
hydroquinone (MBEH) has become the most                  vitiligo.
commonly used depigmentation therapy for vitiligo
and is currently the only drug approved by the FDA       REFERENCES
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J AM ACAD DERMATOL                                                                                                 Rodrigues et al 27
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